Gawo 4: Ikuyendabe Linux pa RocketChip RISC-V

Gawo 4: Ikuyendabe Linux pa RocketChip RISC-V Pachithunzichi, kernel ya Linux imakutumizirani moni kudzera pa GPIO.

Mu gawo ili la nkhani yonyamula RISC-V RocketChip ku bolodi yaku China yokhala ndi Cyclone IV, tidzayendetsabe Linux, komanso kuphunzira momwe tingakhazikitsire IP Core memory controller tokha ndikusintha pang'ono mafotokozedwe a DTS a zida. Nkhaniyi ndi kupitiriza gawo lachitatu, koma, mosiyana ndi yoyamba ija, idzakhala yaifupi kwambiri.

… Chifukwa setup_smp imatchedwa kokha ngati kernel idakonzedwa ndi chithandizo cha SMP, mutha kuyesa kuletsa ma multi-core. Zidzakhala zosasangalatsa ngati ndikufunikanso kugwiritsa ntchito chithandizo cha atomiki mu gawo la kukumbukira (zinkawoneka kwa ine kuti cache imapanga izi zokha), koma pamtundu umodzi siziyenera kutisokoneza.

Komabe sananyamuke ...

[    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
...

Ndizosangalatsa kuti nditatha kukonza zolakwika zonse ndidaganiza zoyang'ana zomwe kernel "reference" iyenera kuwoneka, adatero. make qemu, ndipo adawona cholakwika chofananacho.

Tsoka, mulingo wotsatira (Linux kernel) ndi wovuta kwambiri: GDB, yolumikizidwa kudzera pa JTAG ku RocketChip, mwachiwonekere imagwira ntchito ndi maadiresi amthupi mosasamala kanthu za momwe MMU imapangidwira, ndipo kernel pakadali pano yomwe tikufuna yakonza kale chiwonetserochi. za ma adilesi, kotero ndizosavuta kunena display/10i $pc sizingachitike - tingowona zambiri unimp. Koma ngati tazindikira kale zochotsera (zikuwoneka kuti 0x80200000 -> 0xffffffe000000000), ndiye mutha kunyenga:

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)

Ma breakpoints amayikidwa m'njira yomweyo:

(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

Koma muyenera kuwachotsa pamanja kuti mupitirize - kwa GDB uwu ndi msampha wosamvetsetseka. O inde, ngati munganene s kapena n mmalo mwa si, gdb idzayesa kuyika malo osweka, omwe pazifukwa zodziwikiratu sangakhazikitsidwe, koma palibe njira yoletsera GDB. Koma musathamangire kuyambitsanso bolodi - malinga ndi zomwe ndawonera, ndikwanira kuyambitsanso gdb yokha (zindikirani kuti zopumira zakale sizitha).

M'malo mwake, muyenera kuthana ndi vuto loyambirira: kuyika kwa debugging printk mu ntchito of_find_node_by_type, yogwiritsidwa ntchito ndi code yofufuzira ya boot processor kernel, imasonyeza kuti imawona mtundu wina wa zinyalala m'malo mwa mayina amtundu wa chipangizo. Mwachitsanzo, zimatengera mzere wa "Serial port" kuchokera kwinakwake, ngakhale izi siziri m'munda wa dtb. device_type. Nditafufuza ma byte awa pachithunzi cha kernel, ndidawapeza, ndikuyang'ana zomwe zidalipo, ndikuzindikira zodziwikiratu: kukula kwa kernel mu magawo a boot kumachepetsedwa momveka bwino: amapatsidwa 8Mb, koma amatenga zoposa khumi. Ndinapereka 16Mb, koma zachilendo sizinayime. Pambuyo kuvina ndikuwerenga FDT kuchokera kumaadiresi osiyanasiyana (nthawi zambiri adilesi imasamutsidwa ku kernel mu kaundula a1), potsiriza ndinaganiza zofufuza, koma chiyani сСйчас zafotokozedwa pamenepo. Mwamwayi, m'malo mongoyendayenda ndi debugger (ndipo tikukumbukira kuti pali ma nuances omwe amamasulira ma adilesi omwe akufunikabe kuthetsedwa mwanjira ina), mutha kungoyika fayilo. drivers/of/fdt.c onetsa #define pr_debug printk. Zotsatira zake zinali:

kuwonjezera debug output

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);

Zotuluka pa hardware

                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]

Zotsatira za 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

(Mizere ya "Time-stamp" imatulutsidwa ndi kernel, patsogolo pawo mtengo umatuluka ndi BBL) Kumbali imodzi, FDT imawerengedwa bwino, kumbali ina, zachabechabe zamtundu wina zimapezedwa m'magawo " chinthu" mtengo.

Pakukonza zolakwika, ndidazindikira kuti BBL silingawerenge adilesi "kawiri", osati chifukwa panali zolakwika mu config, koma chifukwa chakuti mizu inali ndi #address-cells = <1>; #size-cells = <1>;.

Kukulitsa kutulutsa kwa debug, ndidawona zolozera kuti type ΠΈ name "kumenyedwa", ndipo m'njira yodabwitsa: byte yawo yoyamba (kuyambira ziro) idasinthidwa kukhala ziro, monga 0xabcdef -> 0xab00ef. Ndinayenera kugwiritsa ntchito njira yodziwika bwino: podziwa maadiresi omwe kukumbukira kowonongeka kuli, yonjezerani ntchitoyi printk sindikizani izi. Chabwino, mavuto okha printk Amwaze pomwe ali ochepa. Kalanga, sizinamveke bwino. Kenako ndidayamba, kufunsira omwe adachotsedwa objdump Baibulo, pamanja anapereka breakpoints ndi kudutsa gawo vuto la code sitepe ndi sitepe. Ndiyeno chinthu chodabwitsa komanso chosasangalatsa chinapezeka: ngati nditaika nthawi yomweyo malo opumira kwinakwake kutali ndi malo odziwika bwino, ndiye kuti, ndikuyimitsa, ndiwona kukumbukira komwe kwawonongeka kale. Koma mukayesa kumuzembera mwakachetechete pang'onopang'ono, kachilomboka kamatha kubisala! Zimamveka ngati chowongolera kukumbukira chosweka ndi cache chomwe chimabisala cholakwika ngati mumapempha nthawi zonse mtengo wofunikira. Zingatani Zitati…

Kusintha kukumbukira

Pokakamira mwayi wothetsa vuto lomwe silinali kumbali yanga, ndinaganiza kuti mwina ndinali nditangolandira kumene memory stick yothyoka. Kenako ndinakumbukira kuti netbook wazaka khumi si kompyuta yonyamula, komanso gwero lamtengo wapatali la DDR2 SO-DIMM. Monga bonasi, mutha kuyika kukumbukira kuchotsedwa pa bolodi ndikulowetsa Memtest nthawi yomweyo (Linux, mwa njira, yodzaza pafupifupi ku chipolopolo chojambula. Koma ndibwino kuti musabwereze kuyesa uku ngati mumayamikira zambiri pa disks zokwera ...). Kumbali imodzi, titha kuganiza kuti kukumbukira sikunagwirizane ndi netbook iyi. Kumbali ina, iye anali wokhoza jombo! Panali chiyembekezo chakuti kukumbukira kunali "kusweka", ndipo vuto silinali m'thumba langa.

Izi zikutanthauza kuti muyenera kuyesa kuyambitsa kwakanthawi ndi netbook memory. Tsoka ilo, Quartus 18 sadziwa kukweza IP Core iyi kuti ikonzedwe. Izi zikutanthauza kuti nthawi yakwana yoti tiphunzire kupanga zochitika zatsopano. Chilichonse chinakhala chophweka: timayang'ana mu IP Catalog ya chinthucho DDR2 SDRAM Controller ndi ALTMEMPHY Intel FPGA IP ndipo timapeza chipika chokhala ndi mawonekedwe omwewo monga kale. Vuto lokha ndikukhazikitsa zokonda zokumbukira.

Kupeza magawo a memory module

Pali njira yodziwikiratu yokonzekera gawoli: werengani magawo kuchokera ku SPD. Zowonadi, ngati kompyuta wamba imawerenga deta ya SPD ndikukhazikitsa wowongolera potengera izo, ndiye kuti tichotse izi pa netbook yomwe ilipo ndikuyiyika patebulo.

Izi zachitika pa Ubuntu zosavuta kwambiri: muyenera kukhazikitsa phukusi i2c-tools, ma modules eeprom ΠΈ i2c-i801 (Sindikudziwa, komabe, kuti dalaivala wachiwiri adzagwira ntchito kulikonse), ndiye thamangani decode-dimms:

decode-dimms zotsatira

# 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

Vuto ndiloti nthawi zina sizinasonyezedwe apa, ndiye tiyeni titenge njira yachiwiri.

Zomwe zalembedwa pama module athu:

Gawo 4: Ikuyendabe Linux pa RocketChip RISC-VGawo 4: Ikuyendabe Linux pa RocketChip RISC-V

Pankhaniyi, zolembedwa pa tchipisi kukumbukira okha ndi chidwi kwambiri: K4T1G164QQ-HCF7. Polemba mzerewu mu Google, timapeza tsatanetsatane wamasamba khumi ndi awiri okhala ndi magawo onse ofunikira, omwe amatha kuphatikizidwa bwino ndi IP Core. Ingomverani mayunitsi a muyeso: penapake ns, penapake - ps, ndipo nthawi zina amagawana nawo tCK. Sindikuphunzitsani zomwe muyenera kutchera khutu - ndidakonza zinthu zambiri mwachisawawa (sindingakutsimikizireni kuti simungathe "kuwotcha" kukumbukira kapena FPGA motere). Ndikungotengerani chidwi chanu pa izi: Sindinathe kuti wowongolera azigwira ntchito kwa nthawi yayitali, ndipo gawo lomaliza linali kuzindikira kuti ndimayenera kuyang'ana m'lifupi mwazolowera zonse zokumbukira kuti zigwirizane ndi code yopangidwa ya Verilog. : pambuyo pa zonse, pamene mu MemIfBundle anasonyeza val mem_ba = IO(Output(UInt(2.W))), ndipo pali mabanki 8 (i.e. adiresi 3 bits lonse), ndiye zonse zomwe tili nazo ndizotuluka kuchokera kwa woyang'anira kukumbukira akulendewera mlengalenga - vuto, koma osati lovuta, kotero chirichonse chimapangidwa, koma sichigwira ntchito.

Mwina chirichonse chingagwire ntchito ndi gawo lachikale ngati wolamulirayo asinthidwa, koma pakali pano ndine waulesi kwambiri kuti ndithane ndi nsikidzi zomwe zingayandama: Ndili ndi zokwanira zanga.

Choncho, atasamuka timebase-frequency mu DTS kuchokera pamlingo wa CPU mpaka mulingo wa node cpus (malinga ndi pempho lomveka bwino la kernel), timapeza:

Mawu obisika

[    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

Pambuyo pake palibe chomwe chikuchitika.

Tsopano mutha kuyesa kuthana ndi mavuto atatu:

[   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

... komanso kuyimitsa zotuluka ku console.

Sizovuta konse kuthana ndi mavuto awiri ndi ma frequency: muyenera kuwonjezera mfundo clocks m'magulu ang'onoang'ono a zida zofunika, kuti zitheke kupereka dzina lodziwika bwino la 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";

Powonjezera mzere #define pr_debug printk mpaka kumayambiriro kwa fayilo init/initramfs.c, yomwe imawonetsa uthenga wokhudza zinyalala m'malo mwa initramfs, timapeza uthenga wowonjezera pang'ono:

[    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

Ndiko kuti, mwina zinyalala ayi mmalo mwa initramfs, ndi вмСстС.

Chabwino, iye anapeza chinachake, mwina izo nzokwanira. Kodi console idapita kuti? Kusakaku kumapereka ulalo wazovuta pa Github: linux idalephera kubweretsa pa bolodi la VC707 - zikuwonekeratu kuti UART yokha, malinga ndi dalaivala, siyeneranso kuyankhula. Koma kukonza wa July 11, 2018 - chaka chimodzi chapitacho. Zinapezeka kuti kudzipereka uku sikunakhalepo mumtengo womwe ndikumanga kernel. Pogwiritsa ntchito chigambachi, ndili ndi Linux yogwira ntchito! Zinapezeka kuti vuto la initramfs silinali lovuta.

Kulowa ngati wosuta = muzu, mawu achinsinsi = sifive, ndidatha popanda vuto lililonse (kupatula kumvetsetsa kuti nambala ya GPIO ili ndi maziko, pomwe zonse zimawerengedwa, zomwe zimangofunika kuwerengedwa kuchokera ku fayilo yofananira). kudzera sysfs kuyatsa LED pa bolodi.

Monga nthawi yapitayi, ndikuyika vidiyo yotsegulira Linux. Pamene console ikusintha kuchoka ku earlyprintk kupita ku muyezo, mtundu wina wa zinyalala umawoneka, wofanana ndi zomwe zimatuluka pamene liwiro la UART limayikidwa molakwika. Chosangalatsa ndichakuti wosewerayo adagwira bwino ntchito "zosokoneza" izi.

Gawo 4: Ikuyendabe Linux pa RocketChip RISC-V

Source: www.habr.com