Wāhanga 4: Kei te whakahaere tonu i a Linux i runga i te RocketChip RISC-V

Wāhanga 4: Kei te whakahaere tonu i a Linux i runga i te RocketChip RISC-V I roto i te pikitia, ka tuku mihi te kakano Linux ki a koe ma te GPIO.

I tenei wahanga o te korero mo te kawe i te RISC-V RocketChip ki te poari Hainamana me te Huripari IV, ka whakahaere tonu matou i te Linux, me te ako ano me pehea te whirihora i te kaiwhakahaere mahara IP Core me te whakatika paku i te whakaahuatanga DTS o nga taputapu. He korero haere tonu tenei tuhinga wahi tuatoru, engari, kare i rite ki te ahua whanui o mua, he poto rawa.

… No te mea te setup_smp ka karangahia mena ka whirihorahia te kernel me te tautoko SMP, ka taea e koe te ngana ki te whakakore i te maha-matua. Kaore e pai ki te hiahia ano ahau ki te whakatinana i te tautoko atomicity i roto i te waahanga mahara (te ahua nei ko te keteroki e tarai ana ki a ia ake), engari i roto i te keehi kotahi-matua kaua e pokanoa ki a maatau.

Kaore ano i rewa...

[    0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[    0.000000] Linux version 4.19.0-sifive-1+ (trosinenko@trosinenko-pc) (gcc version 8.3.0 (Buildroot 2019.02-07449-g4eddd28f99)) #1 Thu Jul 4 18:38:10 MSK 2019
[    0.000000] bootconsole [early0] enabled
[    0.000000] Initial ramdisk at: 0x(____ptrval____) (16777216 bytes)
[    0.000000] Zone ranges:
[    0.000000]   DMA32    [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000]   Normal   [mem 0x00000000c0000000-0x00000bffffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] software IO TLB: mapped [mem 0xbb1fc000-0xbf1fc000] (64MB)
[    0.000000] Unable to find "cpu" devicetree entry
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 258055
[    0.000000] Kernel command line: debug console=ttySIF0,125200 root=/dev/mmcblk0p2 loglevel=7 rootwait
[    0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] Sorting __ex_table...
[    0.000000] BUG: Bad page state in process swapper  pfn:80bf7
[    0.000000] page:ffffffe03f029e08 count:0 mapcount:-65280 mapping:0000000000000000 index:0x1
[    0.000000] flags: 0x0()
[    0.000000] raw: 0000000000000000 0000000000000100 0000000000000200 0000000000000000
[    0.000000] raw: 0000000000000001 0000000000000000 00000000ffff00ff
[    0.000000] page dumped because: nonzero mapcount
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.19.0-sifive-1+ #1
[    0.000000] Call Trace:
[    0.000000] [<ffffffe00002cfde>] walk_stackframe+0x0/0xa0
[    0.000000] [<ffffffe00002d1da>] show_stack+0x2a/0x34
[    0.000000] [<ffffffe00063c898>] chachachllachachachTradeonachachach_inachachipachachachachllachachachTradeonachachachdevachachachypachachachllachachachTradeona+0x20/0x28
[    0.000000] [<ffffffe00009499c>] bad_page+0xe4/0x102
[    0.000000] [<ffffffe0000949f2>] free_pages_check_bad+0x38/0x7a
[    0.000000] [<ffffffe000094bb0>] free_pcppages_bulk+0x106/0x36c
[    0.000000] [<ffffffe0000957be>] free_unref_page_commit.isra.23+0x86/0x8e
[    0.000000] [<ffffffe0000960bc>] free_unref_page+0x44/0x58
[    0.000000] [<ffffffe0000960de>] __free_pages.part.28+0xe/0x22
[    0.000000] [<ffffffe0000056da>] __free_pages_bootmem+0x86/0x90
[    0.000000] [<ffffffe000007c46>] free_all_bootmem+0x156/0x1ba
[    0.000000] [<ffffffe0000023f8>] mem_init+0x36/0x44
[    0.000000] [<ffffffe0000007a0>] start_kernel+0x1aa/0x328
[    0.000000] [<ffffffe000000058>] _sinittext+0x58/0x5c
[    0.000000] Disabling lock debugging due to kernel taint
[    0.000000] BUG: Bad page state in process swapper  pfn:80bf9
[    0.000000] page:ffffffe03f029e78 count:0 mapcount:-65280 mapping:0000000000000000 index:0x0
[    0.000000] flags: 0x0()
[    0.000000] raw: 0000000000000000 ffffffe03f020080 ffffffe03f020080 0000000000000000
[    0.000000] raw: 0000000000000000 0000000000000000 00000000ffff00ff
[    0.000000] page dumped because: nonzero mapcount
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G    B             4.19.0-sifive-1+ #1
[    0.000000] Call Trace:
[    0.000000] [<ffffffe00002cfde>] walk_stackframe+0x0/0xa0
[    0.000000] [<ffffffe00002d1da>] show_stack+0x2a/0x34
[    0.000000] [<ffffffe00063c898>] chachachllachachachTradeonachachach_inachachipachachachachllachachachTradeonachachachdevachachachypachachachllachachachTradeona+0x20/0x28
[    0.000000] [<ffffffe00009499c>] bad_page+0xe4/0x102
[    0.000000] [<ffffffe0000949f2>] free_pages_check_bad+0x38/0x7a
[    0.000000] [<ffffffe0000955c6>] __free_pages_ok+0x3fe/0x430
[    0.000000] [<ffffffe0000960ea>] __free_pages.part.28+0x1a/0x22
[    0.000000] [<ffffffe0000056da>] __free_pages_bootmem+0x86/0x90
[    0.000000] [<ffffffe000007c46>] free_all_bootmem+0x156/0x1ba
[    0.000000] [<ffffffe0000023f8>] mem_init+0x36/0x44
[    0.000000] [<ffffffe0000007a0>] start_kernel+0x1aa/0x328
[    0.000000] [<ffffffe000000058>] _sinittext+0x58/0x5c
[    0.000000] BUG: Bad page state in process swapper  pfn:80bfa
[    0.000000] page:ffffffe03f029eb0 count:0 mapcount:-65280 mapping:0000000000000000 index:0x0
[    0.000000] flags: 0x0()
[    0.000000] raw: 0000000000000000 ffffffe03f0200b8 ffffffe03f0200b8 0000000000000000
[    0.000000] raw: 0000000000000000 0000000000000000 00000000ffff00ff
[    0.000000] page dumped because: nonzero mapcount
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G    B             4.19.0-sifive-1+ #1
[    0.000000] Call Trace:
[    0.000000] [<ffffffe00002cfde>] walk_stackframe+0x0/0xa0
[    0.000000] [<ffffffe00002d1da>] show_stack+0x2a/0x34
[    0.000000] [<ffffffe00063c898>] chachachllachachachTradeonachachach_inachachipachachachachllachachachTradeonachachachdevachachachypachachachllachachachTradeona+0x20/0x28
[    0.000000] [<ffffffe00009499c>] bad_page+0xe4/0x102
[    0.000000] [<ffffffe0000949f2>] free_pages_check_bad+0x38/0x7a
[    0.000000] [<ffffffe0000955c6>] __free_pages_ok+0x3fe/0x430
[    0.000000] [<ffffffe0000960ea>] __free_pages.part.28+0x1a/0x22
[    0.000000] [<ffffffe0000056da>] __free_pages_bootmem+0x86/0x90
[    0.000000] [<ffffffe000007c46>] free_all_bootmem+0x156/0x1ba
[    0.000000] [<ffffffe0000023f8>] mem_init+0x36/0x44
[    0.000000] [<ffffffe0000007a0>] start_kernel+0x1aa/0x328
[    0.000000] [<ffffffe000000058>] _sinittext+0x58/0x5c
[    0.000000] BUG: Bad page state in process swapper  pfn:80bfb
[    0.000000] page:ffffffe03f029ee8 count:0 mapcount:-65280 mapping:0000000000000000 index:0x0
[    0.000000] flags: 0x0()
[    0.000000] raw: 0000000000000000 ffffffe03f0200f0 ffffffe03f0200f0 0000000000000000
[    0.000000] raw: 0000000000000000 0000000000000000 00000000ffff00ff
[    0.000000] page dumped because: nonzero mapcount
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G    B             4.19.0-sifive-1+ #1
[    0.000000] Call Trace:
[    0.000000] [<ffffffe00002cfde>] walk_stackframe+0x0/0xa0
[    0.000000] [<ffffffe00002d1da>] show_stack+0x2a/0x34
[    0.000000] [<ffffffe00063c898>] chachachllachachachTradeonachachach_inachachipachachachachllachachachTradeonachachachdevachachachypachachachllachachachTradeona+0x20/0x28
[    0.000000] [<ffffffe00009499c>] bad_page+0xe4/0x102
[    0.000000] [<ffffffe0000949f2>] free_pages_check_bad+0x38/0x7a
[    0.000000] [<ffffffe0000955c6>] __free_pages_ok+0x3fe/0x430
[    0.000000] [<ffffffe0000960ea>] __free_pages.part.28+0x1a/0x22
[    0.000000] [<ffffffe0000056da>] __free_pages_bootmem+0x86/0x90
[    0.000000] [<ffffffe000007c46>] free_all_bootmem+0x156/0x1ba
[    0.000000] [<ffffffe0000023f8>] mem_init+0x36/0x44
[    0.000000] [<ffffffe0000007a0>] start_kernel+0x1aa/0x328
[    0.000000] [<ffffffe000000058>] _sinittext+0x58/0x5c
[    0.000000] BUG: Bad page state in process swapper  pfn:80bfc
[    0.000000] page:ffffffe03f029f20 count:0 mapcount:-65280 mapping:0000000000000000 index:0x0
[    0.000000] flags: 0x0()
[    0.000000] raw: 0000000000000000 ffffffe03f020028 ffffffe03f020028 0000000000000000
[    0.000000] raw: 0000000000000000 0000000000000000 00000000ffff00ff
...

He mea whakamere i muri i nga mahi patuiro ka whakatau ahau ki te titiro ki te ahua o te putanga "tohutoro" kernel, ka kii ia make qemu, a ka kite i tetahi hapa rite.

Aue, ko te taumata e whai ake nei (Linux kernel) he uaua ake: GDB, honoa ma JTAG ki te RocketChip, he ahua mahi me nga wahitau tinana ahakoa pehea te whirihora o te MMU, a ko te kernel i tenei wa e hiahia ana matou kua whirihora i te whakaaturanga. o nga wahi noho, no reira he ngawari te korero display/10i $pc e kore e puta - he nui noa iho ta tatou e kite unimp. Engari ki te mea kua maarama taatau i te waahanga (te ahua nei 0x80200000 -> 0xffffffe000000000), ka taea e koe te tinihanga:

1: x/10i $pc
=> 0xffffffe000002436 <setup_smp>:      unimp
   0xffffffe000002438 <setup_smp+2>:    unimp
   0xffffffe00000243a <setup_smp+4>:    unimp
   0xffffffe00000243c <setup_smp+6>:    unimp
   0xffffffe00000243e <setup_smp+8>:    unimp
   0xffffffe000002440 <setup_smp+10>:   unimp
   0xffffffe000002442 <setup_smp+12>:   unimp
   0xffffffe000002444 <setup_smp+14>:   unimp
   0xffffffe000002446 <setup_smp+16>:   unimp
   0xffffffe000002448 <setup_smp+18>:   unimp
(gdb) undisplay 1
(gdb) display/10i ($pc - 0xffffffe000002436 + 0x80202436)
2: x/10i ($pc - 0xffffffe000002436 + 0x80202436)
   0x80202436:  addi    sp,sp,-96
   0x80202438:  sd      s0,80(sp)
   0x8020243a:  sd      s1,72(sp)
   0x8020243c:  sd      s2,64(sp)
   0x8020243e:  sd      s3,56(sp)
   0x80202440:  sd      s4,48(sp)
   0x80202442:  sd      s5,40(sp)
   0x80202444:  sd      s6,32(sp)
   0x80202446:  sd      s7,24(sp)
   0x80202448:  sd      s8,16(sp)

He rite tonu te whakatakoto o nga waahi wehenga:

(gdb) p setup_smp
$1 = {<text variable, no debug info>} 0xffffffe000002436 <setup_smp>
(gdb) b *0x80202436
Breakpoint 1 at 0x80202436
(gdb) c
Continuing.

Program received signal SIGTRAP, Trace/breakpoint trap.
setup_smp () at /home/trosinenko/freedom-u-sdk/linux/arch/riscv/kernel/smpboot.c:58
58              while ((dn = of_find_node_by_type(dn, "cpu"))) {
(gdb) bt
#0  setup_smp () at /home/trosinenko/freedom-u-sdk/linux/arch/riscv/kernel/smpboot.c:58
#1  0xffffffe0000022a2 in setup_arch () at /home/trosinenko/freedom-u-sdk/linux/arch/riscv/kernel/setup.c:253
#2  0x0000000000000000 in ?? ()
Backtrace stopped: frame did not save the PC

Engari me tango a ringa koe kia haere tonu - mo te GDB he momo mahanga tino kore e maarama. Ae, mena ka kii koe s ranei n Tuhinga o mua si, ka ngana a gdb ki te whakauru i tetahi waahi pakaru, na te mea ka kitea nga take kaore e whakatauhia, engari kaore he huarahi hei whakakore i te GDB. Engari kaua e tere ki te whakaara ano i te papa - e ai ki aku kitenga, he nui noa ki te whakaara ano i te gdb anake (kia mohio kei ngaro nga waahi tawhito).

Inaa, me mahi koe ki te raru tuatahi: ko te tuunga o te patuiro printk ki tetahi mahi of_find_node_by_type, e whakamahia ana e te waehere rapu kakano tukatuka boot, e whakaatu ana ka kitea e ia etahi momo para hei utu mo nga ingoa momo taputapu. Hei tauira, ka tangohia te raina "Tauranga rangatū" mai i tetahi waahi, ahakoa kaore tenei i te mara dtb device_type. I te rapu i enei paita i roto i te ahua o te kernel, ka kitea e au, ka titiro ki te taapiri, ka mohio ki te maarama: ko te rahi o te kakano i roto i nga tawhā boot he tino whakahawea: kua tohatohahia te 8Mb, engari neke atu i te tekau. I tohaina e ahau te 16Mb, engari kaore i mutu te ahua ke. Whai muri i te kanikani me te panui i te FDT mai i nga waahi noho rereke (ko te tikanga ka whakawhitia te wahitau ki te kernel i roto i te rehita a1), I te mutunga ka whakatau ahau ki te whai, engari he aha сейчас kua poroa ki reira. Waimarie, hei utu mo te hikoi haere me te kaipatu (a ka mahara matou he rerekee me te whakamaoritanga wahitau e tika ana kia whakatauhia i tetahi huarahi, i tetahi atu ranei), ka taea e koe te kuhu ki roto i te konae. drivers/of/fdt.c tohu #define pr_debug printk. Ko te hua ko:

te taapiri i te putanga patuiro

diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 3db0d71d128b..fac47df9d1db 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -173,6 +173,7 @@ asmlinkage void __init setup_vm(void)

 void __init parse_dtb(unsigned int hartid, void *dtb)
 {
+       printk("HART = %u DTB = %lxn", hartid, dtb);
        early_init_dt_scan(__va(dtb));
 }

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 74eaedd5b860..c019e4158e1d 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -940,10 +940,12 @@ struct device_node *of_find_node_by_type(struct device_node *from,
        unsigned long flags;

        raw_spin_lock_irqsave(&devtree_lock, flags);
-       for_each_of_allnodes_from(from, np)
+       for_each_of_allnodes_from(from, np) {
+               printk("%lx %lx [%s] | [%s]n", from, np, np->type, type);
                if (np->type && (of_node_cmp(np->type, type) == 0)
                    && of_node_get(np))
                        break;
+       }
        of_node_put(from);
        raw_spin_unlock_irqrestore(&devtree_lock, flags);
        return np;
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 800ad252cf9c..2b45870ebada 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -31,6 +31,8 @@

 #include "of_private.h"

+#define pr_debug printk
+
 /*
  * of_fdt_limit_memory - limit the number of regions in the /memory node
  * @limit: maximum entries
@@ -1253,6 +1255,7 @@ bool __init early_init_dt_scan(void *params)
  */
 void __init unflatten_device_tree(void)
 {
+       printk("INITIAL: %lxn", initial_boot_params);
        __unflatten_device_tree(initial_boot_params, NULL, &of_root,
                                early_init_dt_alloc_memory_arch, false);

Putanga i runga i nga taputapu

                SIFIVE, INC.

         5555555555555555555555555
        5555                   5555
       5555                     5555
      5555                       5555
     5555       5555555555555555555555
    5555       555555555555555555555555
   5555                             5555
  5555                               5555
 5555                                 5555
5555555555555555555555555555          55555
 55555           555555555           55555
   55555           55555           55555
     55555           5           55555
       55555                   55555
         55555               55555
           55555           55555
             55555       55555
               55555   55555
                 555555555
                   55555
                     5

           SiFive RISC-V Core IP
 {
  #address-cells = <0x00000001>;
  #size-cells = <0x00000001>;
  compatible = "freechips,rocketchip-unknown-dev";
  model = "freechips,rocketchip-unknown";
  chosen {
    linux,initrd-start = <0x82000000>;
    riscv,kernel-end = <0x81200000>;
    riscv,kernel-start = <0x80200000>;
    #address-cells = <0x00000001>;
    #size-cells = <0x00000000>;
    bootargs = <0x64656275 0x6720636f 0x6e736f6c 0x653d7474 0x79534946 0x302c3132 0x35323030 0x20726f6f 0x743d2f64 0x65762f6d 0x6d63626c 0x6b307032 0x206c6f67 0x6c657665 0x6c3d3720 0x726f6f74 0x77616974>;
  }
  firmware {
    sifive,uboot = "YYYY-MM-DD";
  }
  aliases {
    serial0 = <0x2f736f63 0x2f736572 0x69616c40 0x36343030 0x30303030>;
  }
  cpus {
    #address-cells = <0x00000001>;
    #size-cells = <0x00000000>;
    cpu@0 {
      device_type = "cpu";
      clock-frequency = <0x00000000>;
      compatible = "sifive,rocket0", "riscv";
      d-cache-block-size = <0x00000010>;
      d-cache-sets = <0x00000040>;
      d-cache-size = <0x00001000>;
      d-tlb-sets = <0x00000001>;
      d-tlb-size = <0x00000020>;
      i-cache-block-size = <0x00000010>;
      i-cache-sets = <0x00000040>;
      i-cache-size = <0x00001000>;
      i-tlb-sets = <0x00000001>;
      i-tlb-size = <0x00000020>;
      mmu-type = "riscv,sv39";
      next-level-cache = <0x00000001>;
      reg = <0x00000000>;
      riscv,isa = "rv64imafdc";
      status = "okay";
      timebase-frequency = <0x000f4240>;
      tlb-split;
      interrupt-controller {
        #interrupt-cells = <0x00000001>;
        compatible = "riscv,cpu-intc";
        interrupt-controller;
        phandle = <0x00000002>;
      }
    }
  }
  ram@80000000 {
    device_type = "memory";
    reg = <0x80000000 0x40000000>;
    reg-names = "mem";
    phandle = <0x00000001>;
  }
  soc {
    #address-cells = <0x00000001>;
    #size-cells = <0x00000001>;
    compatible = "freechips,rocketchip-unknown-soc", "simple-bus";
    ranges;
    clint@2000000 {
      compatible = "riscv,clint0";
      interrupts-extended = <0x00000002 0x00000003 0x00000002 0x00000007>;
      reg = <0x02000000 0x00010000>;
      reg-names = "control";
    }
    debug-controller@0 {
      compatible = "sifive,debug-013", "riscv,debug-013";
      interrupts-extended = <0x00000002 0x0000ffff>;
      reg = <0x00000000 0x00001000>;
      reg-names = "control";
    }
    gpio@64002000 {
      #gpio-cells = <0x00000002>;
      #interrupt-cells = <0x00000002>;
      compatible = "sifive,gpio0";
      gpio-controller;
      interrupt-controller;
      interrupt-parent = <0x00000003>;
      interrupts = <0x00000003 0x00000004 0x00000005 0x00000006 0x00000007 0x00000008>;
      reg = <0x64002000 0x00001000>;
      reg-names = "control";
    }
    interrupt-controller@c000000 {
      #interrupt-cells = <0x00000001>;
      compatible = "riscv,plic0";
      interrupt-controller;
      interrupts-extended = <0x00000002 0x0000000b 0x00000002 0x00000009>;
      reg = <0x0c000000 0x04000000>;
      reg-names = "control";
      riscv,max-priority = <0x00000007>;
      riscv,ndev = <0x00000008>;
      phandle = <0x00000003>;
    }
    rom@10000 {
      compatible = "sifive,maskrom0";
      reg = <0x00010000 0x00002000>;
      reg-names = "mem";
    }
    serial@64000000 {
      compatible = "sifive,uart0";
      interrupt-parent = <0x00000003>;
      interrupts = <0x00000002>;
      reg = <0x64000000 0x00001000>;
      reg-names = "control";
    }
    spi@64001000 {
      #address-cells = <0x00000001>;
      #size-cells = <0x00000000>;
      compatible = "sifive,spi0";
      interrupt-parent = <0x00000003>;
      interrupts = <0x00000001>;
      reg = <0x64001000 0x00001000>;
      reg-names = "control";
      mmc@0 {
        compatible = "mmc-spi-slot";
        disable-wp;
        reg = <0x00000000>;
        spi-max-frequency = <0x01312d00>;
        voltage-ranges = <0x00000ce4 0x00000ce4>;
      }
    }
    tlclk {
      #clock-cells = <0x00000000>;
      clock-frequency = <0x017d7840>;
      clock-output-names = "tlclk";
      compatible = "fixed-clock";
    }
  }
}
[    0.000000] HART = 0 DTB = 81200000
[    0.000000] search "chosen", depth: 0, uname:
[    0.000000] search "chosen", depth: 1, uname: chosen
[    0.000000] Looking for initrd properties...
[    0.000000] Command line is: debug console=ttySIF0,125200 root=/dev/mmcblk0p2 loglevel=7 rootwait
[    0.000000] dt_root_size_cells = 1
[    0.000000] dt_root_addr_cells = 1
[    0.000000] memory scan node ram@80000000, reg size 8,
[    0.000000]  - 80000000 ,  40000000
[    0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[    0.000000] Linux version 4.19.0-sifive-1+ (trosinenko@trosinenko-pc) (gcc version 8.3.0 (Buildroot 2019.02-07449-g4eddd28f99)) #1 SMP Sat Jul 6 12:14:41 MSK 2019
[    0.000000] bootconsole [early0] enabled
[    0.000000] initrd not found or empty - disabling initrd
[    0.000000] Zone ranges:
[    0.000000]   DMA32    [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000]   Normal   [mem 0x00000000c0000000-0x00000bffffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] INITIAL: ffffffe001000000
[    0.000000]  -> unflatten_device_tree()
[    0.000000] Unflattening device tree:
[    0.000000] magic: d00dfeed
[    0.000000] size: 00001000
[    0.000000] version: 00000011
[    0.000000]   size is 13512, allocating...
[    0.000000]   unflattening (____ptrval____)...
[    0.000000] fixed up name for  ->
[    0.000000] fixed up name for chosen -> chosen
[    0.000000] fixed up name for firmware -> firmware
[    0.000000] fixed up name for aliases -> aliases
[    0.000000] fixed up name for cpus -> cpus
[    0.000000] fixed up name for cpu@0 -> cpu
[    0.000000] fixed up name for interrupt-controller -> interrupt-controller
[    0.000000] fixed up name for ram@80000000 -> ram
[    0.000000] fixed up name for soc -> soc
[    0.000000] fixed up name for clint@2000000 -> clint
[    0.000000] fixed up name for debug-controller@0 -> debug-controller
[    0.000000] fixed up name for gpio@64002000 -> gpio
[    0.000000] fixed up name for interrupt-controller@c000000 -> interrupt-controller
[    0.000000] fixed up name for rom@10000 -> rom
[    0.000000] fixed up name for serial@64000000 -> serial
[    0.000000] fixed up name for spi@64001000 -> spi
[    0.000000] fixed up name for mmc@0 -> mmc
[    0.000000] fixed up name for tlclk -> tlclk
[    0.000000]  <- unflatten_device_tree()
[    0.000000] software IO TLB: mapped [mem 0xbb1fc000-0xbf1fc000] (64MB)
[    0.000000] 0 ffffffe03effcab0 [attach() failed for %s with error %d
[    0.000000] ] | [cpu]
[    0.000000] 0 ffffffe03eff0020 [(null)] | [cpu]

Putanga ki QEMU

                SIFIVE, INC.
5555555555555555555555555
5555                   5555
5555                     5555
5555                       5555
5555       5555555555555555555555
5555       555555555555555555555555
5555                             5555
5555                               5555
5555                                 5555
5555555555555555555555555555          55555
55555           555555555           55555
55555           55555           55555
55555           5           55555
55555                   55555
55555               55555
55555           55555
55555       55555
55555   55555
555555555
55555
5
SiFive RISC-V Core IP
{
#address-cells = <0x00000002>;
#size-cells = <0x00000002>;
compatible = "riscv-virtio";
model = "riscv-virtio,qemu";
chosen {
linux,initrd-start = <0x00000000 0x88000000>;
linux,initrd-end = <0x00000000 0x88442b86>;
riscv,kernel-start = <0x00000000 0x80200000>;
riscv,kernel-end = <0x00000000 0x80c482ac>;
bootargs = "";
stdout-path = <0x2f756172 0x74403130 0x30303030>;
}
uart@10000000 {
interrupts = <0x0000000a>;
interrupt-parent = <0x00000002>;
clock-frequency = <0x00384000>;
reg = <0x00000000 0x10000000 0x00000000 0x00000100>;
compatible = "ns16550a";
}
test@100000 {
reg = <0x00000000 0x00100000 0x00000000 0x00001000>;
compatible = "sifive,test0";
}
virtio_mmio@10008000 {
interrupts = <0x00000008>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10008000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
virtio_mmio@10007000 {
interrupts = <0x00000007>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10007000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
virtio_mmio@10006000 {
interrupts = <0x00000006>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10006000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
virtio_mmio@10005000 {
interrupts = <0x00000005>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10005000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
virtio_mmio@10004000 {
interrupts = <0x00000004>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10004000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
virtio_mmio@10003000 {
interrupts = <0x00000003>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10003000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
virtio_mmio@10002000 {
interrupts = <0x00000002>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10002000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
virtio_mmio@10001000 {
interrupts = <0x00000001>;
interrupt-parent = <0x00000002>;
reg = <0x00000000 0x10001000 0x00000000 0x00001000>;
compatible = "virtio,mmio";
}
cpus {
#address-cells = <0x00000001>;
#size-cells = <0x00000000>;
timebase-frequency = <0x00989680>;
cpu@0 {
device_type = "cpu";
reg = <0x00000000>;
status = "okay";
compatible = "riscv";
riscv,isa = "rv64imafdcsu";
mmu-type = "riscv,sv48";
clock-frequency = <0x3b9aca00>;
interrupt-controller {
#interrupt-cells = <0x00000001>;
interrupt-controller;
compatible = "riscv,cpu-intc";
linux,phandle = <0x00000001>;
phandle = <0x00000001>;
}
}
}
memory@80000000 {
device_type = "memory";
reg = <0x00000000 0x80000000 0x00000000 0x40000000>;
}
soc {
#address-cells = <0x00000002>;
#size-cells = <0x00000002>;
compatible = "simple-bus";
ranges;
pci@30000000 {
interrupt-map-mask = <0x00001800 0x00000000 0x00000000 0x00000007>;
interrupt-map = <0x00000000 0x00000000 0x00000000 0x00000001 0x00000002 0x00000020 0x00000000 0x00000000 0x00000000 0x00000002 0x00000002 0x00000021 0x00000000 0x00000000 0x00000000 0x00000003 0x00000002 0x00000022 0x00000000 0x00000000 0x00000000 0x00000004 0x00000002 0x00000023 0x00000800 0x00000000 0x00000000 0x00000001 0x00000002 0x00000021 0x00000800 0x00000000 0x00000000 0x00000002 0x00000002 0x00000022 0x00000800 0x00000000 0x00000000 0x00000003 0x00000002 0x00000023 0x00000800 0x00000000 0x00000000 0x00000004 0x00000002 0x00000020 0x00001000 0x00000000 0x00000000 0x00000001 0x00000002 0x00000022 0x00001000 0x00000000 0x00000000 0x00000002 0x00000002 0x00000023 0x00001000 0x00000000 0x00000000 0x00000003 0x00000002 0x00000020 0x00001000 0x00000000 0x00000000 0x00000004 0x00000002 0x00000021 0x00001800 0x00000000 0x00000000 0x00000001 0x00000002 0x00000023 0x00001800 0x00000000 0x00000000 0x00000002 0x00000002 0x00000020 0x00001800 0x00000000 0x00000000 0x00000003 0x00000002 0x00000021 0x00001800 0x00000000 0x00000000 0x00000004 0x00000002 0x00000022>;
ranges = <0x01000000 0x00000000 0x00000000 0x00000000 0x03000000 0x00000000 0x00010000 0x02000000 0x00000000 0x40000000 0x00000000 0x40000000 0x00000000 0x40000000>;
reg = <0x00000000 0x30000000 0x00000000 0x10000000>;
dma-coherent;
bus-range = <0x00000000 0x000002ff>;
linux,pci-domain = <0x00000000>;
device_type = "pci";
compatible = "pci-host-ecam-generic";
#size-cells = <0x00000002>;
#interrupt-cells = <0x00000001>;
#address-cells = <0x00000003>;
}
interrupt-controller@c000000 {
linux,phandle = <0x00000002>;
phandle = <0x00000002>;
riscv,ndev = <0x00000035>;
riscv,max-priority = <0x00000007>;
reg-names = "control";
reg = <0x00000000 0x0c000000 0x00000000 0x04000000>;
interrupts-extended = <0x00000001 0x0000000b 0x00000001 0x00000009>;
interrupt-controller;
compatible = "riscv,plic0";
#interrupt-cells = <0x00000001>;
#address-cells = <0x00000000>;
}
clint@2000000 {
interrupts-extended = <0x00000001 0x00000003 0x00000001 0x00000007>;
reg = <0x00000000 0x02000000 0x00000000 0x00010000>;
compatible = "riscv,clint0";
}
}
}
[    0.000000] HART = 0 DTB = 80e00000
[    0.000000] search "chosen", depth: 0, uname:
[    0.000000] search "chosen", depth: 1, uname: chosen
[    0.000000] Looking for initrd properties...
[    0.000000] initrd_start=0x88000000  initrd_end=0x88442b86
[    0.000000] Command line is: earlyprintk
[    0.000000] dt_root_size_cells = 2
[    0.000000] dt_root_addr_cells = 2
[    0.000000] memory scan node memory@80000000, reg size 16,
[    0.000000]  - 80000000 ,  40000000
[    0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[    0.000000] Linux version 4.19.0-sifive-1+ (trosinenko@trosinenko-pc) (gcc version 8.3.0 (Buildroot 2019.02-07449-g4eddd28f99)) #1 SMP Sat Jul 6 12:14:41 MSK 2019
[    0.000000] bootconsole [early0] enabled
[    0.000000] Initial ramdisk at: 0x(____ptrval____) (4467590 bytes)
[    0.000000] Zone ranges:
[    0.000000]   DMA32    [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000]   Normal   [mem 0x00000000c0000000-0x00000bffffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] INITIAL: ffffffe000c00000
[    0.000000]  -> unflatten_device_tree()
[    0.000000] Unflattening device tree:
[    0.000000] magic: d00dfeed
[    0.000000] size: 00000d56
[    0.000000] version: 00000011
[    0.000000]   size is 14192, allocating...
[    0.000000]   unflattening (____ptrval____)...
[    0.000000] fixed up name for  ->
[    0.000000] fixed up name for chosen -> chosen
[    0.000000] fixed up name for uart@10000000 -> uart
[    0.000000] fixed up name for test@100000 -> test
[    0.000000] fixed up name for virtio_mmio@10008000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10007000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10006000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10005000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10004000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10003000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10002000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10001000 -> virtio_mmio
[    0.000000] fixed up name for cpus -> cpus
[    0.000000] fixed up name for cpu@0 -> cpu
[    0.000000] fixed up name for interrupt-controller -> interrupt-controller
[    0.000000] fixed up name for memory@80000000 -> memory
[    0.000000] fixed up name for soc -> soc
[    0.000000] fixed up name for pci@30000000 -> pci
[    0.000000] fixed up name for interrupt-controller@c000000 -> interrupt-controller
[    0.000000] fixed up name for clint@2000000 -> clint
[    0.000000]  <- unflatten_device_tree()
[    0.000000] software IO TLB: mapped [mem 0xbb1fc000-0xbf1fc000] (64MB)
[    0.000000] 0 ffffffe03effc808 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effca78 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effcd98 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd068 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd230 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd4b8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd740 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd9c8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effdc50 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effded8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe160 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe3e8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe670 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe888 [cpu] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03effec00 [<NULL>] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03effeee8 [memory] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efff0b0 [<NULL>] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efff320 [pci] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efff858 [<NULL>] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efffd58 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effc808 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effca78 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effcd98 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd068 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd230 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd4b8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd740 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd9c8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effdc50 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effded8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe160 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe3e8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe670 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe888 [cpu] | [cpu]
[    0.000000] elf_hwcap is 0x112d
[    0.000000] percpu: Embedded 17 pages/cpu @(____ptrval____) s29400 r8192 d32040 u69632
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 258055
[    0.000000] Kernel command line: earlyprintk
[    0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] Sorting __ex_table...
[    0.000000] Memory: 949716K/1046528K available (6565K kernel code, 342K rwdata, 2564K rodata, 208K init, 832K bss, 96812K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu:     RCU event tracing is enabled.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0
[    0.000000] plic: mapped 53 interrupts to 2 (out of 2) handlers.
[    0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x24e6a1710, max_idle_ns: 440795202120 ns
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] bootconsole [early0] disabled
[    0.000000] HART = 0 DTB = 80e00000
[    0.000000] search "chosen", depth: 0, uname:
[    0.000000] search "chosen", depth: 1, uname: chosen
[    0.000000] Looking for initrd properties...
[    0.000000] initrd_start=0x88000000  initrd_end=0x88442b86
[    0.000000] Command line is: earlyprintk
[    0.000000] dt_root_size_cells = 2
[    0.000000] dt_root_addr_cells = 2
[    0.000000] memory scan node memory@80000000, reg size 16,
[    0.000000]  - 80000000 ,  40000000
[    0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[    0.000000] Linux version 4.19.0-sifive-1+ (trosinenko@trosinenko-pc) (gcc version 8.3.0 (Buildroot 2019.02-07449-g4eddd28f99)) #1 SMP Sat Jul 6 12:14:41 MSK 2019
[    0.000000] bootconsole [early0] enabled
[    0.000000] Initial ramdisk at: 0x(____ptrval____) (4467590 bytes)
[    0.000000] Zone ranges:
[    0.000000]   DMA32    [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000]   Normal   [mem 0x00000000c0000000-0x00000bffffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] INITIAL: ffffffe000c00000
[    0.000000]  -> unflatten_device_tree()
[    0.000000] Unflattening device tree:
[    0.000000] magic: d00dfeed
[    0.000000] size: 00000d56
[    0.000000] version: 00000011
[    0.000000]   size is 14192, allocating...
[    0.000000]   unflattening (____ptrval____)...
[    0.000000] fixed up name for  ->
[    0.000000] fixed up name for chosen -> chosen
[    0.000000] fixed up name for uart@10000000 -> uart
[    0.000000] fixed up name for test@100000 -> test
[    0.000000] fixed up name for virtio_mmio@10008000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10007000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10006000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10005000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10004000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10003000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10002000 -> virtio_mmio
[    0.000000] fixed up name for virtio_mmio@10001000 -> virtio_mmio
[    0.000000] fixed up name for cpus -> cpus
[    0.000000] fixed up name for cpu@0 -> cpu
[    0.000000] fixed up name for interrupt-controller -> interrupt-controller
[    0.000000] fixed up name for memory@80000000 -> memory
[    0.000000] fixed up name for soc -> soc
[    0.000000] fixed up name for pci@30000000 -> pci
[    0.000000] fixed up name for interrupt-controller@c000000 -> interrupt-controller
[    0.000000] fixed up name for clint@2000000 -> clint
[    0.000000]  <- unflatten_device_tree()
[    0.000000] software IO TLB: mapped [mem 0xbb1fc000-0xbf1fc000] (64MB)
[    0.000000] 0 ffffffe03effc808 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effca78 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effcd98 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd068 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd230 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd4b8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd740 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd9c8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effdc50 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effded8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe160 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe3e8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe670 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe888 [cpu] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03effec00 [<NULL>] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03effeee8 [memory] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efff0b0 [<NULL>] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efff320 [pci] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efff858 [<NULL>] | [cpu]
[    0.000000] ffffffe03effe888 ffffffe03efffd58 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effc808 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effca78 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effcd98 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd068 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd230 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd4b8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd740 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effd9c8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effdc50 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effded8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe160 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe3e8 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe670 [<NULL>] | [cpu]
[    0.000000] 0 ffffffe03effe888 [cpu] | [cpu]
[    0.000000] elf_hwcap is 0x112d
[    0.000000] percpu: Embedded 17 pages/cpu @(____ptrval____) s29400 r8192 d32040 u69632
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 258055
[    0.000000] Kernel command line: earlyprintk
[    0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] Sorting __ex_table...
[    0.000000] Memory: 949716K/1046528K available (6565K kernel code, 342K rwdata, 2564K rodata, 208K init, 832K bss, 96812K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu:     RCU event tracing is enabled.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0
[    0.000000] plic: mapped 53 interrupts to 2 (out of 2) handlers.
[    0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x24e6a1710, max_idle_ns: 440795202120 ns
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] bootconsole [early0] disabled
[    0.000000] Calibrating delay loop (skipped), value calculated using timer frequency.. 20.00 BogoMIPS (lpj=100000)
[    0.000000] pid_max: default: 32768 minimum: 301
[    0.000000] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.000000] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.020000] rcu: Hierarchical SRCU implementation.
[    0.020000] smp: Bringing up secondary CPUs ...
[    0.020000] smp: Brought up 1 node, 1 CPU
[    0.050000] devtmpfs: initialized
[    0.050000] 0 ffffffe03effc808 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effca78 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effcd98 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effd068 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effd230 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effd4b8 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effd740 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effd9c8 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effdc50 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effded8 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effe160 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effe3e8 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effe670 [<NULL>] | [cpu]
[    0.050000] 0 ffffffe03effe888 [cpu] | [cpu]
[    0.050000] random: get_random_u32 called from bucket_table_alloc+0x76/0x17a with crng_init=0
[    0.050000] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.050000] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.060000] NET: Registered protocol family 16
[    0.090000] vgaarb: loaded
[    0.090000] SCSI subsystem initialized
[    0.090000] usbcore: registered new interface driver usbfs
[    0.090000] usbcore: registered new interface driver hub
[    0.090000] usbcore: registered new device driver usb
[    0.090000] pps_core: LinuxPPS API ver. 1 registered
[    0.090000] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <[email protected]>
[    0.090000] PTP clock support registered
[    0.100000] Advanced Linux Sound Architecture Driver Initialized.
[    0.100000] clocksource: Switched to clocksource riscv_clocksource
[    0.110000] NET: Registered protocol family 2
[    0.110000] tcp_listen_portaddr_hash hash table entries: 512 (order: 1, 8192 bytes)
[    0.110000] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[    0.110000] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[    0.110000] TCP: Hash tables configured (established 8192 bind 8192)
[    0.110000] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.110000] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.110000] NET: Registered protocol family 1
[    0.120000] Unpacking initramfs...
[    0.590000] workingset: timestamp_bits=62 max_order=18 bucket_order=0
[    0.620000] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.620000] io scheduler noop registered
[    0.620000] io scheduler deadline registered
[    0.620000] io scheduler cfq registered (default)
[    0.620000] io scheduler mq-deadline registered
[    0.620000] io scheduler kyber registered
[    0.620000] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[    0.690000] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[    0.690000] 10000000.uart: ttyS0 at MMIO 0x10000000 (irq = 10, base_baud = 230400) is a 16550A
[    0.720000] console [ttyS0] enabled
[    0.720000] [drm] radeon kernel modesetting enabled.
[    0.720000] [drm] amdgpu kernel modesetting enabled.
[    0.730000] loop: module loaded
[    0.730000] libphy: Fixed MDIO Bus: probed
[    0.740000] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[    0.740000] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    0.740000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.740000] ehci-pci: EHCI PCI platform driver
[    0.740000] ehci-platform: EHCI generic platform driver
[    0.740000] mousedev: PS/2 mouse device common for all mice
[    0.740000] usbcore: registered new interface driver usbhid
[    0.740000] usbhid: USB HID core driver
[    0.740000] usbcore: registered new interface driver snd-usb-audio
[    0.740000] NET: Registered protocol family 10
[    0.750000] Segment Routing with IPv6
[    0.750000] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[    0.750000] NET: Registered protocol family 17
[    0.750000] Key type dns_resolver registered
[    0.760000] ALSA device list:
[    0.760000]   No soundcards found.
[    0.770000] Freeing unused kernel memory: 208K
[    0.770000] This architecture does not have kernel memory protection.
[    0.770000] Run /init as init process

("Wai-waa" nga raina he mea whakaputa e te kakano, kei mua i a raatau ko te rakau ka whakaputahia e BBL) I tetahi taha, ka pai te panui o te FDT, i tetahi atu taha, ka puta mai etahi momo korero koretake i roto i te panui " ahanoa” rakau.

I te wa o te mahi patuiro, i mohio ahau kaore e taea e BBL te panui i te wahitau "rua", ehara i te mea he hapa kei roto i te whirihora, engari na te mea kei te pona pakiaka te #address-cells = <1>; #size-cells = <1>;.

I te whakawhānui i te putanga patuiro, i kite ahau i nga tohutoro ki type и name "whiu", me te ahua rereke: ko ta ratou paita tuatahi (mai i te kore) i tautuhia ki te kore, penei 0xabcdef -> 0xab00ef. Me whakamahi ahau i tetahi tikanga mohio: ma te mohio ki nga wahitau kei hea te mahara kua pakaru, taapiri atu ki te mahi printk tāngia tēnei raraunga. Ana, ko nga wero ano printk whakamararatia ki te wahi torutoru o ratou. Aue, kaore i tino marama ake. Na ka timata ahau, ka korero ki te hunga kua whakakorehia objdump putanga, tautuhi a ringa i nga waahi pakaru me te haere i roto i te waahanga raruraru o te waehere taahiraa i te taahiraa. Na ka kitea tetahi mea ngaro me te kino: mena ka whakatauhia e ahau he waahi pakaru i tetahi waahi tawhiti atu i te ahua pai, ka mutu, ka kite ahau i te mahara kua pakaru. Engari ki te ngana koe ki te kuhu marie ki runga i a ia i ia taahiraa, ka taea e te pepeke te huna! He hongi ano he pukoro mahara pakaru me te keteroki e huna ana i te hapa mena ka tono tonu koe i te uara e hiahiatia ana. He aha mehemea…

Whakakapi mahara

Ma te piri ki te whai waahi ki te whakaoti rapanga karekau i taku taha, i mahara ahau tera pea kua pakaruhia e ahau tetahi rakau mahara kua pakaru. Na ka mahara ahau ko te netbook tekau-tau te pakeke ehara i te mea he rorohiko kawe noa, engari he puna nui hoki o DDR2 SO-DIMM. Hei bonus, ka taea e koe te tango mahara mai i te poari ki roto, ka whakairihia a Memtest tata tonu (Linux, na te mea, ka utaina tata ki te anga whakairoiro. Engari he pai ake kia kaua e tuaruatia tenei whakamatautau mena ka aro nui koe ki nga korero kei runga i nga kopae kua mau...). I tetahi taha, ka taea e tatou te whakaaro kaore i pai te mahara ki tenei pukapuka kupenga. I tetahi atu taha, i taea e ia te peke! He tumanako ka "pakaru" noa te mahara, kaore te raru i roto i taku takai.

Ko te tikanga me ngana koe ki te whakarewa mo te wa poto me te mahara netbook. Engari, kaore a Quartus 18 e mohio ki te whakapai ake i tenei IP Core kia taea ai te whakatika. Ko te tikanga kua tae mai te wa ki te ako me pehea te hanga tauira hou. Ko nga mea katoa he maamaa noa: ka titiro matou ki te IP Catalog mo te taonga DDR2 SDRAM Controller me ALTMEMPHY Intel FPGA IP ka whiwhi matou i tetahi poraka me te atanga rite o mua. Ko te raru anake ko te whakarite i nga tautuhinga mahara tika.

Te tiki i nga tawhā o te kōwae mahara

He huarahi tino marama ki te whirihora i te waahanga: panuihia nga tawhā mai i te SPD. Inaa, mena ka panuihia e te rorohiko noa nga raraunga SPD me te whirihora i te kaiwhakahaere i runga i taua mea, katahi ka tango i enei raraunga ki runga i te pukapuka kupenga o mua ka whakauruhia ki roto i te ripanga.

Ka mahia tenei ki Ubuntu tino ngawari: me whakauru koe i te kete i2c-tools, kawenga kōwae eeprom и i2c-i801 (Kaore au i te tino mohio, ka mahi te taraiwa tuarua ki nga waahi katoa), ka oma decode-dimms:

putanga wetewaehere-dimms

# decode-dimms version 6231 (2014-02-20 10:54:34 +0100)
Memory Serial Presence Detect Decoder
By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
Jean Delvare, Trent Piepho and others
Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/0-0050
Guessing DIMM is in                             bank 1
---=== SPD EEPROM Information ===---
EEPROM Checksum of bytes 0-62                   OK (0x00)
SPD Revision                                    Invalid
Fundamental Memory type                         Unknown (0x00)
---=== Manufacturing Information ===---
Manufacturer                                    Undefined
Part Number                                     Undefined
Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/4-0050
Guessing DIMM is in                             bank 1
---=== SPD EEPROM Information ===---
EEPROM Checksum of bytes 0-62                   OK (0x00)
SPD Revision                                    Invalid
Fundamental Memory type                         Unknown (0x00)
---=== Manufacturing Information ===---
Manufacturer                                    Undefined
Part Number                                     Undefined
Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/6-0050
Guessing DIMM is in                             bank 1
---=== SPD EEPROM Information ===---
EEPROM Checksum of bytes 0-62                   OK (0x76)
# of bytes written to SDRAM EEPROM              128
Total number of bytes in EEPROM                 256
Fundamental Memory type                         DDR2 SDRAM
SPD Revision                                    1.2
---=== Memory Characteristics ===---
Maximum module speed                            800 MHz (PC2-6400)
Size                                            1024 MB
Banks x Rows x Columns x Bits                   8 x 13 x 10 x 64
Ranks                                           2
SDRAM Device Width                              16 bits
Module Height                                   30.0 mm
Module Type                                     SO-DIMM (67.6 mm)
DRAM Package                                    Planar
Voltage Interface Level                         SSTL 1.8V
Module Configuration Type                       No Parity
Refresh Rate                                    Reduced (7.8 us) - Self Refresh
Supported Burst Lengths                         4, 8
tCL-tRCD-tRP-tRAS                               6-6-6-18
Supported CAS Latencies (tCL)                   6T, 5T, 4T
Minimum Cycle Time                              2.50 ns at CAS 6 (tCK min)
3.00 ns at CAS 5
3.75 ns at CAS 4
Maximum Access Time                             0.40 ns at CAS 6 (tAC)
0.45 ns at CAS 5
0.50 ns at CAS 4
Maximum Cycle Time (tCK max)                    8.00 ns
---=== Timing Parameters ===---
Address/Command Setup Time Before Clock (tIS)   0.17 ns
Address/Command Hold Time After Clock (tIH)     0.25 ns
Data Input Setup Time Before Strobe (tDS)       0.05 ns
Data Input Hold Time After Strobe (tDH)         0.12 ns
Minimum Row Precharge Delay (tRP)               15.00 ns
Minimum Row Active to Row Active Delay (tRRD)   10.00 ns
Minimum RAS# to CAS# Delay (tRCD)               15.00 ns
Minimum RAS# Pulse Width (tRAS)                 45.00 ns
Write Recovery Time (tWR)                       15.00 ns
Minimum Write to Read CMD Delay (tWTR)          7.50 ns
Minimum Read to Pre-charge CMD Delay (tRTP)     7.50 ns
Minimum Active to Auto-refresh Delay (tRC)      60.00 ns
Minimum Recovery Delay (tRFC)                   127.50 ns
Maximum DQS to DQ Skew (tDQSQ)                  0.20 ns
Maximum Read Data Hold Skew (tQHS)              0.30 ns
---=== Manufacturing Information ===---
Manufacturer                                    Samsung
Manufacturing Location Code                     0x02
Part Number                                     M4 70T2864QZ3-CF7
Revision Code                                   0x3351
Manufacturing Date                              2009-W34
Assembly Serial Number                          0x79C64E9A
Number of SDRAM DIMMs detected and decoded: 3

Ko te raruraru ko etahi wa kaore i te tohuhia ki konei, na reira me haere ki te huarahi tuarua.

He aha nga mea kua tuhia ki o maatau waahanga:

Wāhanga 4: Kei te whakahaere tonu i a Linux i runga i te RocketChip RISC-VWāhanga 4: Kei te whakahaere tonu i a Linux i runga i te RocketChip RISC-V

I tenei keehi, he pai ake te tuhi i runga i nga maramara mahara: K4T1G164QQ-HCF7. Ma te tuhi i tenei raina ki a Google, ka whiwhi matou i te papaaarangi o nga wharangi maha me nga tawhā e tika ana, ka taea te whakauru ki roto i nga taonga IP Core. Me aro noa ki nga waeine o te ine: tetahi wahi ns, i tetahi wahi - ps, me etahi wa ka tiri tCK. E kore ahau e whakaako ki a koe he aha te aro - he maha nga mea i whirihora e au i runga i te matapōkere (Kaore e taea e au te kii kaore e taea e koe te "tahu" te mahara me te FPGA penei). Ka aro noa ahau ki tenei: Kaore e taea e au te mahi i te kaiwhakahaere mo te wa roa, a ko te mahi whakamutunga ko te mohio me tirohia e au te whanui o nga atanga mahara katoa kia rite ki te waehere Verilog kua hangaia. : i muri i te katoa, ina i roto i MemIfBundle kua tohua val mem_ba = IO(Output(UInt(2.W))), a e 8 nga pareparenga (arā, he wāhitau 3 bits te whanui), na ko te mea katoa kei a matou ko te putanga mai i te pukoro mahara e iri ana i te rangi - he raruraru, engari ehara i te mea nui, no reira ka whakahiatohia nga mea katoa, engari kaore e mahi.

Tena pea ka mahi nga mea katoa me te waahanga tawhito mena ka whakahouhia te kaiwhakahaere, engari mo tenei wa he mangere ahau ki te whakahaere i nga pepeke karekau pea: he nui aku ake.

Na, i muri i te neke timebase-frequency i DTS mai i te taumata PTM motuhake ki te taumata node cpus (i runga i te tono tino marama o te kernel), ka whiwhi tatou:

Kupu huna

[    0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[    0.000000] Linux version 4.19.0-sifive-1+ (trosinenko@trosinenko-pc) (gcc version 8.3.0 (Buildroot 2019.02-07449-g4eddd28f99)) #1 SMP Tue Jul 9 22:42:36 MSK 2019
[    0.000000] bootconsole [early0] enabled
[    0.000000] Initial ramdisk at: 0x(____ptrval____) (16777216 bytes)
[    0.000000] Zone ranges:
[    0.000000]   DMA32    [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000]   Normal   [mem 0x00000000c0000000-0x00000bffffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x00000000bfffffff]
[    0.000000] software IO TLB: mapped [mem 0xbb1fc000-0xbf1fc000] (64MB)
[    0.000000] elf_hwcap is 0x112d
[    0.000000] percpu: Embedded 17 pages/cpu @(____ptrval____) s29400 r8192 d32040 u69632
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 258055
[    0.000000] Kernel command line: debug console=ttySIF0,125200 root=/dev/mmcblk0p2 loglevel=7 rootwait
[    0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] Sorting __ex_table...
[    0.000000] Memory: 937696K/1046528K available (6565K kernel code, 343K rwdata, 2564K rodata, 208K init, 832K bss, 108832K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu:     RCU event tracing is enabled.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0
[    0.000000] plic: mapped 8 interrupts to 1 (out of 2) handlers.
[    0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns
[    0.000000] Console: colour dummy device 80x25
[    0.000000] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=10000)
[    0.020000] pid_max: default: 32768 minimum: 301
[    0.030000] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.040000] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.140000] rcu: Hierarchical SRCU implementation.
[    0.190000] smp: Bringing up secondary CPUs ...
[    0.190000] smp: Brought up 1 node, 1 CPU
[    0.220000] devtmpfs: initialized
[    0.300000] random: get_random_u32 called from bucket_table_alloc+0x76/0x17a with crng_init=0
[    0.330000] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.340000] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.380000] NET: Registered protocol family 16
[    1.850000] vgaarb: loaded
[    1.870000] SCSI subsystem initialized
[    1.900000] usbcore: registered new interface driver usbfs
[    1.910000] usbcore: registered new interface driver hub
[    1.920000] usbcore: registered new device driver usb
[    1.930000] pps_core: LinuxPPS API ver. 1 registered
[    1.940000] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <[email protected]>
[    1.950000] PTP clock support registered
[    1.970000] Advanced Linux Sound Architecture Driver Initialized.
[    2.010000] clocksource: Switched to clocksource riscv_clocksource
[    2.600000] NET: Registered protocol family 2
[    2.640000] tcp_listen_portaddr_hash hash table entries: 512 (order: 1, 8192 bytes)
[    2.650000] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[    2.670000] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[    2.700000] TCP: Hash tables configured (established 8192 bind 8192)
[    2.720000] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    2.730000] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    2.750000] NET: Registered protocol family 1
[    2.770000] Unpacking initramfs...
[   23.980000] Initramfs unpacking failed: junk in compressed archive
[   24.030000] workingset: timestamp_bits=62 max_order=18 bucket_order=0
[   25.020000] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[   25.030000] io scheduler noop registered
[   25.040000] io scheduler deadline registered
[   25.050000] io scheduler cfq registered (default)
[   25.060000] io scheduler mq-deadline registered
[   25.060000] io scheduler kyber registered
[   25.120000] sifive_gpio 64002000.gpio: SiFive GPIO chip registered 6 GPIOs
[   25.150000] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[   28.870000] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[   28.940000] sifive-serial 64000000.serial: unable to find controller clock
[   28.950000] sifive-serial: probe of 64000000.serial failed with error -2
[   28.980000] [drm] radeon kernel modesetting enabled.
[   28.990000] [drm] amdgpu kernel modesetting enabled.
[   29.500000] loop: module loaded
[   29.610000] sifive_spi 64001000.spi: Unable to find bus clock
[   29.620000] sifive_spi: probe of 64001000.spi failed with error -2
[   29.640000] libphy: Fixed MDIO Bus: probed
[   29.680000] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[   29.690000] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[   29.700000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[   29.710000] ehci-pci: EHCI PCI platform driver
[   29.720000] ehci-platform: EHCI generic platform driver
[   29.750000] mousedev: PS/2 mouse device common for all mice
[   29.790000] usbcore: registered new interface driver usbhid
[   29.800000] usbhid: USB HID core driver
[   29.820000] usbcore: registered new interface driver snd-usb-audio
[   29.900000] NET: Registered protocol family 10
[   29.960000] Segment Routing with IPv6
[   29.960000] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[   30.020000] NET: Registered protocol family 17
[   30.020000] Key type dns_resolver registered
[   30.070000] bootconsole [early0] uses init memory and must be disabled even before the real one is ready
[   30.080000] bootconsole [early0] disabled

I muri mai kaore he mea e kitea.

Inaianei ka taea e koe te tarai i nga raru e toru:

[   23.980000] Initramfs unpacking failed: junk in compressed archive
...
[   28.940000] sifive-serial 64000000.serial: unable to find controller clock
...
[   29.610000] sifive_spi 64001000.spi: Unable to find bus clock

...ka mutu hoki te whakaputanga ki te papatohu.

Ehara i te mea uaua ki te hinga i nga raru e rua me nga iarere: me taapiri koe i nga tohu clocks ki nga rakau iti o nga taputapu e hiahiatia ana, kia pai ai te hoatu ingoa tapanga marama mo te node tlclk:

diff --git a/arch/riscv/dts/zeowaa-1gb.dts b/arch/riscv/dts/zeowaa-1gb.dts
index 4b2cebc..1347e76 100644
--- a/arch/riscv/dts/zeowaa-1gb.dts
+++ b/arch/riscv/dts/zeowaa-1gb.dts
@@ -96,6 +97,7 @@
L8: serial@64000000 {
compatible = "sifive,uart0";
interrupt-parent = <&L0>;
+                        clocks = <&tlclk>;
interrupts = <2>;
reg = <0x64000000 0x1000>;
reg-names = "control";
@@ -107,6 +109,7 @@
interrupt-parent = <&L0>;
interrupts = <1>;
reg = <0x64001000 0x1000>;
+                        clocks = <&tlclk>;
reg-names = "control";
L12: mmc@0 {
compatible = "mmc-spi-slot";
@@ -116,7 +119,7 @@
voltage-ranges = <3300 3300>;
};
};
-                L11: tlclk {
+                tlclk: tlclk {
#clock-cells = <0>;
clock-frequency = <25000000>;
clock-output-names = "tlclk";

Ma te taapiri i te raina #define pr_debug printk ki te timatanga o te kōnae init/initramfs.c, e whakaatu ana i te karere mo te paru hei utu mo nga initramfs, ka whiwhi tatou i tetahi korero mokowhiti ake:

[    2.760000] Unpacking initramfs...
[    2.770000] Detected gzip compressed data
[   23.940000] Detected (null) compressed data
[   23.970000] Initramfs unpacking failed: junk in compressed archive

Arā, kāre pea te para Tuhinga o mua initramfs, me вместе.

Kaati, i kitea e ia tetahi mea, tera pea ka nui. I haere te papatohu ki hea? Ko te rapu he hono ki te take i runga i Github: I rahua te linux ki te kawe ake i runga i te papa vc707 - ka puta ko te UART anake, e ai ki te taraiwa, kaore e pai ki te korero. Engari whakatika i tuhia i te 11 o Hurae, 2018 - kotahi tau ki muri. I puta mai ko tenei mahi kaore i uru ki roto i te rakau e hanga ana e ahau te kakano. Ma te tono a-ringa i tenei papaki, ka whiwhi ahau i te Linux mahi! I puta mai ko te raru ki te initramfs ehara i te tino whakahirahira.

Ko te takiuru hei kaiwhakamahi = pakiaka, kupuhipa = sifive, ka taea e au te kore he raru (haunga te maarama he turanga te nama GPIO, no reira nga mea katoa ka tatauhia, me panui noa mai i te konae pseudo-kounga) mā sysfs whakamaramahia te LED i runga i te papa.

Ka rite ki te wa whakamutunga, kei te taapirihia e ahau he ataata tuhinga mo te whakarewatanga o Linux. Ina huri te papatohu mai i te earlyprintk ki te paerewa, ka puta mai etahi momo para, he rite ki te putanga ina he he te whakatakotoranga o te tere UART. Ko te mea whakamiharo, i angitu te mahi a te kaitakaro i tenei "kino".

Wāhanga 4: Kei te whakahaere tonu i a Linux i runga i te RocketChip RISC-V

Source: will.com