В he nui ake, iti iho ranei te kaiwhakahaere mahara mahi i whakatinanahia, he takai i runga i te IP Core mai i Quartus, he urutau mo TileLink. I tenei ra, i roto i te waahanga "Kei te kawe matou i te RocketChip ki tetahi poari Hainamana iti-mohiotia me Cyclone" ka kite koe i tetahi papatohu mahi. He iti ake te roa o te mahi: I whakaaro ahau ka tere tonu taku whakarewa i a Linux ka haere tonu, engari ehara i te mea koinei te take. I roto i tenei waahanga, ka whakaaro ahau ki te titiro ki te tukanga o te whakarewa i te U-Boot, BBL, me nga ngana whakama o te kernel Linux ki te arawhiti. Engari he papatohu - U-Boot, me te tino matatau, he maha nga mea e tumanakohia ana e koe mai i te papatohu tino.
Ka whakauruhia e te taputapu he kaari SD e hono ana ma te atanga SPI, me te UART. I te wahanga rorohiko, ka whakakapia a BootROM ki xip i runga i sdboot a, ko te tikanga, kua taapirihia nga waahanga uta e whai ake nei (i runga i te kaari SD).
Te whakaoti i te taputapu
Na, ko te mahi: me huri koe ki te "nui" matua me te hono i tetahi UART (mai i te Raspberry) me te urutau SD (i whakamahia e matou he kaari mai i Catalex me nga titi e ono: GND, VCC, MISO, MOSI, SCK, CS) .
Ko te tikanga, he tino ngawari nga mea katoa. Engari i mua i te mohio ki tenei, ka makahia ahau mai i tetahi taha ki tetahi taha: i muri i te wa o mua, ka whakatau ahau me uru ano ahau ki roto. System tetahi mea penei HasPeripheryUART (me te whakatinanatanga e tika ana), he pera ano mo te kaari SD - ka rite nga mea katoa. Na ka whakatau ahau ki te kite me pehea te whakatinana i roto i te hoahoa "tino". Na, he aha te mea nui mo tenei? Ko Arty, te ahua, kaore e pai - kei te noho tonu te taniwha unleahshed.DevKitConfigs. Na ohorere ka puta ko etahi whakakikorua i nga waahi katoa, i taapirihia ma nga tawhā ma nga taviri. Ki taku whakaaro he tino ngawari tenei me te whirihora, engari ka hiahia ahau ki te whakahaere i tetahi mea i te tuatahi ... Kaore koe i te mea ano, he maamaa noa ake he hoha?.. No reira ahau i tutaki ai vera.iofpga.FPGAChip mo Microsemi FPGAs ka tangohia tonutia mo nga korukī me te ngana ki te hanga i taku ake whakatinanatanga ma te whakataurite, Waimarie he nui ake, iti iho ranei te katoa o te "papapapa papa" kei roto i te konae kotahi.
I puta mai me taapiri noa koe System.scala raina
class System(implicit p: Parameters) extends RocketSubsystem
...
with HasPeripherySPI
with HasPeripheryUART
...
{
val tlclock = new FixedClockResource("tlclk", p(DevKitFPGAFrequencyKey))
...
}
class SystemModule[+L <: System](_outer: L)
extends RocketSubsystemModuleImp(_outer)
...
with HasPeripheryUARTModuleImp
with HasPeripheryGPIOModuleImp
...Raina i roto i te tinana o te akomanga System he taapiri korero mo te auau e mahi ai tenei wahanga o to tatou SoC ki te konae dts. Ki taku mohio, ko te DTS/DTB he tairitenga tuuturu o te hangarau mono-a-takaro mo nga taputapu whakauru: ka whakahiatohia te rakau whakaahuatanga dts ki roto i te konae dtb rua ka whakawhitia e te bootloader ki te kernel kia tika ai te whirihora i te taputapu. He mea whakamiharo, kaore he raina me tlclock he pai te whakakotahitanga o nga mea katoa, engari ko te whakahiato i a BootROM (me whakamahara ahau ki a koe, inaianei kua oti tenei sdboot) karekau e mahi - i te wa o te mahi whakahiato ka poroporoaki i te konae dts me te hanga pane me te tonotono TL_CLK, he mihi ka taea e ia te whirihora tika i nga kaiwehewehe auau mo nga atanga o waho.
Ka hiahia hoki koe ki te whakatika paku i te "waea":
Platform.scala:
class PlatformIO(implicit val p: Parameters) extends Bundle {
...
// UART
io.uart_tx := sys.uart(0).txd
sys.uart(0).rxd := RegNext(RegNext(io.uart_rx))
// SD card
io.sd_cs := sys.spi(0).cs(0)
io.sd_sck := sys.spi(0).sck
io.sd_mosi := sys.spi(0).dq(0).o
sys.spi(0).dq(0).i := false.B
sys.spi(0).dq(1).i := RegNext(RegNext(io.sd_miso))
sys.spi(0).dq(2).i := false.B
sys.spi(0).dq(3).i := false.B
}Ko nga mekameka rehita, he pono, i taapiri noa ma te whakataurite me etahi atu waahi o te waehere taketake. Te nuinga pea, me tiaki ratou ki . I roto pea некоторых Ko nga poraka kei a raatau ake te whakamarumaru, engari ko te tuatahi ka hiahia ahau ki te whakarewa i te iti rawa "i te taumata kounga teitei." Ko tetahi patai pai ake mo au ko te aha te MISO me te MOSI e iri ana ki runga dq? Kaore ano i kitea e au te whakautu, engari ko te ahua kei te whakawhirinaki te toenga o te waehere ki runga i taua hononga.
Ko te taha tinana, i tautapa noa e ahau nga titi hoahoa ki nga hoapaki kore utu i runga i te poraka, ka nekehia te peke whiriwhiri ngaohiko ki te 3.3V.
urutau SD
Tirohanga mai i runga:
Tirohanga Raro:
Patuiro Pūmanawa: Utauta
Tuatahi, me korero tatou mo nga taputapu patuiro e waatea ana me o raatau here.
Minicom
Tuatahi, me panui e tatou he aha te bootloader me te kernel putanga. Ki te mahi i tenei i runga i te Linux (i tenei keehi, kei runga i te RaspberryPi), me hiahia te kaupapa Minicom. Ko te tikanga, ko nga kaupapa katoa e mahi ana me te tauranga rangatū ka mahi.
Kia mahara ko te wa e timata ana, me tohu te ingoa taputapu tauranga hei -D /dev/ttyS0 - i muri i te kōwhiringa -D. Ana, nga korero matua: ki te puta, whakamahia Ctrl-A, X. He keehi ano taku kaore i mahi tenei huinga - katahi ka taea e koe te kii mai i tetahi huihuinga SSH tata killall -KILL minicom.
He ahua ano tetahi. Inaa, e rua nga UART o te RaspberryPi, a ka taea kee nga tauranga e rua ki te urutau mo tetahi mea: tetahi mo Nihokikorangi, ko tetahi ma te taunoa ka whakaputa i te papatohu kernel. Waimarie, ka taea te whakakore i tenei whanonga .
Te tuhi ano i te mahara
I te wa e patuiro ana, ki te whakamatautau i tetahi whakapae, i etahi wa me mahi ahau utaina bootloader (pouri) ki RAM tika mai i te kaihautu. Ka taea pea tenei mai i te GDB, engari i te mutunga ka whai ahau i tetahi huarahi ngawari: I kapehia e ahau te konae e tika ana ki te Raspberry, ka tukuna ano te tauranga 4444 ma te SSH (telnet mai i OpenOCD) ka whakamahi i te whakahau. load_image. Ka mahia ana e koe, te ahua nei kua maroke nga mea katoa, engari ko te mea pono "Kare e moe, ka kimo noa": Ka tangohia e ia te konae, ka mahia i te tere o te rua kiropaita ia hekona.
Nga ahuatanga o te whakauru i nga waahi pakaru
He maha nga tangata kaore pea i whai whakaaro ki tenei i te wa e tarai ana i nga papatono auau, engari kaore i te wa katoa nga waahi pakaru i roto i nga taputapu. I etahi wa ko te whakatakoto i te waahi pakaru ka uru ki te tuhi i nga tohutohu motuhake ki te waahi tika tika ki te waehere miihini. Hei tauira, koinei te mahi o taku whakahau paerewa b i roto i te GDB. Anei nga mea e whai ake nei:
- e kore e taea e koe te tuku ira ki roto BootROM na te mea ko ROM
- Ka taea e koe te tautuhi i te waahi pakaru ki te waehere kua utaina ki te RAM mai i te kaari SD, engari me tatari koe kia utaina. Ki te kore, e kore matou e tuhi ano i tetahi wahi o te waehere, engari ka tuhia ano e te kaitautai to maatau waahi pakaru
E mohio ana ahau ka taea e koe te tono ki te whakamahi i nga waahi pakaru taputapu, engari he iti noa te maha.
Whakakapinga BootROM Tere
I te waahi tuatahi o te patuiro, he maha tonu te hiahia ki te whakatika i te BootROM ka ngana ano. Engari he raruraru: Ko te BootROM tetahi waahanga o te hoahoa i utaina ki roto i te FPGA, a ko tana whakahiato he mea mo etahi meneti (a ko tenei i muri tata tonu i te kohinga o te ahua BootROM ake mai i a C me Assembler ...). Waimarie, i roto i te mooni nga mea katoa tino tere: ko te raupapa o nga mahi e whai ake nei:
- regenerate bootrom.mif (I huri ahau ki te MIF hei utu mo te HEX, na te mea he raru tonu taku ki te HEX, a ko MIF te whakatakotoranga taketake a Alter)
- i roto i te Quartus mea
Processing -> Update Memory Initialization File - i runga i te mea Assembler (kei te taha maui o nga Mahi) whakahau Tīmata ano
Nga mea katoa mo nga mea katoa - he rua tekau hēkona.
Te whakarite i te kaari SD
He ngawari noa nga mea katoa, engari me manawanui koe me te 14Gb mokowā kōpae:
git clone https://github.com/sifive/freedom-u-sdk
git submodule update --recursive --init
makeWhai muri ka hiahia koe ki te whakauru i tetahi ma, he pai ake ranei, tetahi kaore he mea e tika ana, he kaari SD, ka mahia.
sudo make DISK=/dev/sdX format-boot-loader… Kei hea sdX — te taputapu kua tohua ki te kaari. WHAKATOKANGA: ko nga raraunga kei runga i te kaari ka mukua, ka tuhiruatia me te whanui! He iti rawa te utu ki te mahi i te huihuinga katoa mai i raro sudono te mea ka riro katoa nga taonga hanga root, a ko te huihuinga me mahi i raro sudo tonu.
Ko te hua he kaari kua tohua ki te GPT me nga waahanga e wha, ko tetahi he FAT me uEnv.txt me te ahua bootable i roto i te whakatakotoranga FIT (kei roto he maha nga whakaahua-iti, kei ia tangata me tana ake wahitau tangohanga), kei te waatea te tahi atu wehewehenga, me whakahōputu ki te Ext4 mo Linux. E rua ano nga waahanga - mea ngaro: Ko te U-Boot e noho ana i runga i tetahi (ko tana wehenga, ki taku mohio, he pakeke ki te BootROM), i tetahi atu, te ahua nei, kei te ora tonu ona taurangi taiao, engari kare ano au e whakamahi.
Taumata tuatahi, BootROM
Te na ô ra te paari auhia e: “Mai te peu e i roto i te porotarama te orihia ra e te tambourine, i roto i te roro uira te vai atoa ra te ori ma te tapo‘i auahi.” Ehara i te mea mo te mea kua tata tahuna e ahau te poari, me te whakatau "Ae, he rite te taumata iti o te GND." (te ahua nei, kaore te parenga e mamae i muri i nga mea katoa ...) He korero ake mo te mea mena kaore o ringaringa e tipu mai i reira, karekau e mutu te hikoi ki te kawe ohorere: i te wa e whakapirihia ai te hononga ki runga i te papa, kaore ano i taea e au te hono tika i nga hoapaki - e whakaatu ana te ataata me pehea te horapa o te konohiko. i runga i te hononga katoa, me tono noa he rino whakapiringa, Mo au, ka "papakia" noa ia. Kaati, kare pea i pai te konuhono mo te mahana o te rino whakapiringa, he mea ke atu pea... I te nuinga o te wa, i taku kitenga kua tekau ma rua nga hoapaki, ka mutu ka tiimata ahau ki te patuiro. Na ka timata mea ngaro: I hono ahau i te RX / TX mai i te UART, ka utaina e ahau te firmware - e kii ana
INIT
CMD0
ERRORAna, he arorau nga mea katoa - kaore au i hono i te waahanga kaari SD. Ka whakatikahia e matou te ahuatanga, ka utaina te firmware ... Me te wahangu ... He aha ahau i kore ai e huri i taku whakaaro, engari ka tuwhera te pouaka iti: me hono tetahi o nga titi kōwae ki te VCC. I roto i taku keehi, i tautokohia e te kōwae te 5V mo te tuku hiko, na me te kore e whakaaro rua, ka whakauruhia e ahau te waea mai i te waahanga ki tera taha o te poari. Ko te mutunga mai, ka whiria te hononga honohono kua whiria, a I ngaro noa te whakapā UART. facepalm.jpg I te nuinga o te waa, "ko te mahunga kino e kore e okioki nga waewae," me nga ringa kopikopiko e kore e okioki ki te upoko...
Ko te hua, i kite ahau i te mea kua roa e tatari ana
INIT
CMD0
CMD8
ACMD41
CMD58
CMD16
CMD18
LOADING /Ano, ka neke, ka huri te tohu uta. Ka maumahara tonu ahau ki aku ra kura me te uta marie o MinuetOS mai i te kōpae pīngore. Ki te kore te puku e huri.
Ko te raruraru ko muri i te karere BOOT kaore he mea e tupu. Ko te tikanga tenei ko te wa ki te hono ma OpenOCD ki te Raspberry, ki te GDB i runga i te kaihautu, ka kite he aha tena.
Tuatahi, ko te hono ma te whakamahi i te GDB i whakaatu tonu mai tera $pc (te porohita papatono, te wahitau o te tohutohu o naianei) ka rere ki 0x0 - ka tupu pea tenei i muri i nga hapa maha. Na reira, i muri tonu i te tukunga o te karere BOOT Kia taapirihia he kopae mutunga kore. Ma tenei ka whakaroa ia mo tetahi wa ...
diff --git a/bootrom/sdboot/sd.c b/bootrom/sdboot/sd.c
index c6b5ede..bca1b7f 100644
--- a/bootrom/sdboot/sd.c
+++ b/bootrom/sdboot/sd.c
@@ -224,6 +224,8 @@ int main(void)
kputs("BOOT");
+ while(*(volatile char *)0x10000){}
+
__asm__ __volatile__ ("fence.i" : : : "memory");
return 0;
}Ka whakamahia taua waehere tinihanga "mo te pono": I rongo ahau i tetahi waahi ko te kopikopiko mutunga kore he Whanonga Kore, engari kare pea te kaikoipi e whakaaro (Ka maumahara ahau ki a koe e ai ki te 0x10000 kei te BootROM).
Ko te ahua nei, he aha atu te tumanako - he kino te whakauru, he aha nga momo waehere puna kei reira? Engari i roto kei te patuiro te kaituhi i te waehere C... Kreks-fex-pex:
(gdb) file builds/zeowaa-e115/sdboot.elf
A program is being debugged already.
Are you sure you want to change the file? (y or n) y
Reading symbols from builds/zeowaa-e115/sdboot.elf...done.
Me tango noa e koe ehara i te konae MIF, ipupihi ranei, engari ko te putanga taketake kei te whakatakotoranga ELF.
Inaianei ka taea e koe te whakaaro me te nganatanga nth te wahitau ka haere tonu te mahi (koinei tetahi take i kore ai te kaitoi i whakaaro he mutunga kore te kapiti). Kapa
set variable $pc=0xADDRka taea e koe te huri i te uara rehita i runga i te rere (i tenei keehi, te wahitau o te ako o naianei). Ma tana awhina, ka taea e koe te whakarereke i nga uara kua tuhia ki te mahara (me nga rehita-mapi mahara).
I te mutunga, ka tae ahau ki te whakatau (kaore e tino mohio ko tehea te mea tika) kei a matou "he ahua kaari SD o te punaha he", a me haere kaua ki te timatanga o nga raraunga kua tangohia, engari ki te 0x89800 paita atu:
diff --git a/bootrom/sdboot/head.S b/bootrom/sdboot/head.S
index 14fa740..2a6c944 100644
--- a/bootrom/sdboot/head.S
+++ b/bootrom/sdboot/head.S
@@ -13,7 +13,7 @@ _prog_start:
smp_resume(s1, s2)
csrr a0, mhartid
la a1, dtb
- li s1, PAYLOAD_DEST
+ li s1, (PAYLOAD_DEST + 0x89800)
jr s1
.section .rodataAkene i pa ano tenei na te kore he kaari 4Gb koretake i te ringaringa, ka mau ahau i te 2Gb ka whakakapia i roto i te Makefile ohorere. DEMO_END=11718750 i runga i DEMO_END=3078900 (kaua e rapu tikanga i roto i tetahi tikanga motuhake - kaore he mea, ko te mea kua tuu te ahua ki runga i te kaari).
Taumata tuarua, U-Boot
Inaianei kei te "hinga" tonu tatou, engari kua tae ke tatou ki te waahi tika 0x0000000080089a84. I konei me whakaae ahau: inaa, kaore te whakaaturanga e haere "me nga waahi katoa", engari kua tuhia he waahanga "i muri", na konei kua taea e au te whakauru i te konae dtb tika mai i ta maatau SoC, whakatika i nga tautuhinga. HiFive_U-Boot taurangi CONFIG_SYS_TEXT_BASE=0x80089800 (hei utu o 0x08000000) kia rite ai te wahitau tango ki te wahi tuturu. Inaianei ka utaina e matou te mapi o te taumata e whai ake nei, tetahi atu ahua:
(gdb) file ../freedom-u-sdk/work/HiFive_U-Boot/u-boot
(gdb) tui enNa ka kite tatou:
│304 /* │
│305 * trap entry │
│306 */ │
│307 trap_entry: │
│308 addi sp, sp, -32*REGBYTES │
>│309 SREG x1, 1*REGBYTES(sp) │
│310 SREG x2, 2*REGBYTES(sp) │
│311 SREG x3, 3*REGBYTES(sp) │I tua atu, ka peke matou i waenga i nga rarangi 308 me 309. A ehara i te mea miharo, na te mea kei roto $sp takoto te tikanga 0xfffffffe31cdc0a0. Aue, ka "rere" tonu na te rarangi 307. Na reira, me ngana ki te whakatakoto i te waahi wehenga ki trap_entry, ka hoki ki 0x80089800 (U-Boot's entry point), me te tumanako karekau e tika te whakatakoto i nga rehita i mua i te peke... Te ahua nei ka pai:
(gdb) b trap_entry
Breakpoint 1 at 0x80089a80: file /hdd/trosinenko/fpga/freedom-u-sdk/HiFive_U-Boot/arch/riscv/cpu/HiFive/start.S, line 308.
(gdb) set variable $pc=0x80089800
(gdb) c
Continuing.
Breakpoint 1, trap_entry () at /hdd/trosinenko/fpga/freedom-u-sdk/HiFive_U-Boot/arch/riscv/cpu/HiFive/start.S:308
(gdb) p/x $sp
$4 = 0x81cf950He tino tika te tohu tohu, he korero pono: e tohu ana ki te karo i te RAM (mehemea karekau he whakamaoritanga korero, engari me tumanako tatou ki tetahi whiringa ngawari).
Me ngana ki te whakakapi i te atatohu ki 0x881cf950. Ko te mutunga, ka tae ki te whakatau handle_trap ka karanga, ka karanga, katahi ano ka tomo ki roto _exit_trap me te tautohetohe epc=2148315240 (i roto i te ira):
(gdb) x/10i 2148315240
0x800cb068 <strnlen+12>: lbu a4,0(a5)
0x800cb06c <strnlen+16>: bnez a4,0x800cb078 <strnlen+28>
0x800cb070 <strnlen+20>: sub a0,a5,a0
0x800cb074 <strnlen+24>: ret
0x800cb078 <strnlen+28>: addi a5,a5,1
0x800cb07c <strnlen+32>: j 0x800cb064 <strnlen+8>
0x800cb080 <strdup>: addi sp,sp,-32
0x800cb084 <strdup+4>: sd s0,16(sp)
0x800cb088 <strdup+8>: sd ra,24(sp)
0x800cb08c <strdup+12>: li s0,0Tautuhia te waahi wehenga ki strnlen, ka haere tonu tatou ka kite:
(gdb) bt
#0 strnlen (s=s@entry=0x10060000 "", count=18446744073709551615) at lib/string.c:283
#1 0x00000000800cc14c in string (buf=buf@entry=0x881cbd4c "", end=end@entry=0x881cc15c "", s=0x10060000 "", field_width=<optimized out>, precision=<optimized out>, flags=<optimized out>) at lib/vsprintf.c:265
#2 0x00000000800cc63c in vsnprintf_internal (buf=buf@entry=0x881cbd38 "exception code: 5 , ", size=size@entry=1060, fmt=0x800d446e "s , epc %08x , ra %08lxn", fmt@entry=0x800d4458 "exception code: %d , %s , epc %08x , ra %08lxn", args=0x881cc1a0,
args@entry=0x881cc188) at lib/vsprintf.c:619
#3 0x00000000800cca54 in vsnprintf (buf=buf@entry=0x881cbd38 "exception code: 5 , ", size=size@entry=1060, fmt=fmt@entry=0x800d4458 "exception code: %d , %s , epc %08x , ra %08lxn", args=args@entry=0x881cc188) at lib/vsprintf.c:710
#4 0x00000000800cca68 in vscnprintf (buf=buf@entry=0x881cbd38 "exception code: 5 , ", size=size@entry=1060, fmt=fmt@entry=0x800d4458 "exception code: %d , %s , epc %08x , ra %08lxn", args=args@entry=0x881cc188) at lib/vsprintf.c:717
#5 0x00000000800ccb50 in printf (fmt=fmt@entry=0x800d4458 "exception code: %d , %s , epc %08x , ra %08lxn") at lib/vsprintf.c:792
#6 0x000000008008a9f0 in _exit_trap (regs=<optimized out>, epc=2148315240, code=<optimized out>) at arch/riscv/lib/interrupts.c:92
#7 handle_trap (mcause=<optimized out>, epc=<optimized out>, regs=<optimized out>) at arch/riscv/lib/interrupts.c:55
#8 0x0000000080089b10 in trap_entry () at /hdd/trosinenko/fpga/freedom-u-sdk/HiFive_U-Boot/arch/riscv/cpu/HiFive/start.S:343
Backtrace stopped: frame did not save the PCTe ahua, _exit_trap e hiahia ana ki te tuku korero patuiro mo te tuunga i puta, engari e kore e taea e ia. Na, me pehea e kore e whakaatuhia ano o maatau puna. set directories ../freedom-u-sdk/HiFive_U-Boot/ MŌ! Kua whakaatuhia inaianei!
Kaati, me oma ano, ka kite mai i te puranga ka whaiwhai i te take o te raru tuatahi i puta ai te hapa tuatahi (mcause == 5). Mena i tika taku mohio ki nga mea kua tuhia kei te wharangi 37, ko te tikanga o tenei tuunga Load access fault. Ko te ahua kei konei te take
arch/riscv/cpu/HiFive/start.S:
call_board_init_f:
li t0, -16
li t1, CONFIG_SYS_INIT_SP_ADDR
and sp, t1, t0 /* force 16 byte alignment */
#ifdef CONFIG_DEBUG_UART
jal debug_uart_init
#endif
call_board_init_f_0:
mv a0, sp
jal board_init_f_alloc_reserve
mv sp, a0
jal board_init_f_init_reserve
mv a0, zero /* a0 <-- boot_flags = 0 */
la t5, board_init_f
jr t5 /* jump to board_init_f() */
$sp he rite tonu te tikanga he, me roto board_init_f_init_reserve ka puta he hapa. Te ahua nei ko te tangata hara: he taurangi me te ingoa maramara CONFIG_SYS_INIT_SP_ADDR. Kua tautuhia i roto i te konae HiFive_U-Boot/include/configs/HiFive-U540.h. I etahi wa ka whakaaro ahau, tera pea, ka pai, me taapiri e ahau he kaitautai whawhai mo te tukatuka - tera pea he ngawari ake te whakatika i te tukatuka iti? Engari ka kite ahau he rite tonu te ahua o te taonga mai i te mea kaore i tino oti#if 0-tautuhinga motuhake mo te whirihoranga mahara rereke, a ka taea e koe te mahi i tenei:
diff --git a/include/configs/HiFive-U540.h b/include/configs/HiFive-U540.h
index ca89383..245542c 100644
--- a/include/configs/HiFive-U540.h
+++ b/include/configs/HiFive-U540.h
@@ -65,12 +65,9 @@
#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_0
#endif
#if 1
-/*#define CONFIG_NR_DRAM_BANKS 1*/
+#define CONFIG_NR_DRAM_BANKS 1
#define PHYS_SDRAM_0 0x80000000 /* SDRAM Bank #1 */
-#define PHYS_SDRAM_1
- (PHYS_SDRAM_0 + PHYS_SDRAM_0_SIZE) /* SDRAM Bank #2 */
-#define PHYS_SDRAM_0_SIZE 0x80000000 /* 2 GB */
-#define PHYS_SDRAM_1_SIZE 0x10000000 /* 256 MB */
+#define PHYS_SDRAM_0_SIZE 0x40000000 /* 1 GB */
#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_0
#endif
/*
@@ -81,7 +78,7 @@
#define CONSOLE_ARG "console=ttyS0,115200 "
/* Init Stack Pointer */
-#define CONFIG_SYS_INIT_SP_ADDR (0x08000000 + 0x001D0000 -
+#define CONFIG_SYS_INIT_SP_ADDR (0x80000000 + 0x001D0000 -
GENERATED_GBL_DATA_SIZE)
#define CONFIG_SYS_LOAD_ADDR 0xa0000000 /* partway up SDRAM */I etahi wa ko te maha o nga tootoo kua tae ki te waahi whakahirahira. I muri i te tohe iti, ka tae ahau ki te hiahia ki te hanga i te tauranga tika mo taku papa. Ki te mahi i tenei, me kape me te whakatika i te maha o nga konae kia rite ki ta maatau whirihoranga.
Ana, tata, tenei te tepu iti
trosinenko@trosinenko-pc:/hdd/trosinenko/fpga/freedom-u-sdk/HiFive_U-Boot$ git show --name-status
commit 39cd67d59c16ac87b46b51ac1fb58f16f1eb1048 (HEAD -> zeowaa-1gb)
Author: Anatoly Trosinenko <[email protected]>
Date: Tue Jul 2 17:13:16 2019 +0300
Initial support for Zeowaa A-E115FB board
M arch/riscv/Kconfig
A arch/riscv/cpu/zeowaa-1gb/Makefile
A arch/riscv/cpu/zeowaa-1gb/cpu.c
A arch/riscv/cpu/zeowaa-1gb/start.S
A arch/riscv/cpu/zeowaa-1gb/timer.c
A arch/riscv/cpu/zeowaa-1gb/u-boot.lds
M arch/riscv/dts/Makefile
A arch/riscv/dts/zeowaa-1gb.dts
A board/Zeowaa/zeowaa-1gb/Kconfig
A board/Zeowaa/zeowaa-1gb/MAINTAINERS
A board/Zeowaa/zeowaa-1gb/Makefile
A board/Zeowaa/zeowaa-1gb/Zeowaa-A-E115FB.c
A configs/zeowaa-1gb_defconfig
A include/configs/zeowaa-1gb.hKa kitea nga korero i roto .
I puta mai, i runga i tenei poari SiFive nga rehita o etahi taputapu he rereke nga waahi noho. I puta mai ano kua whirihorahia a U-Boot ma te whakamahi i te tikanga Kconfig, kua maarama mai i te kernel Linux - hei tauira, ka taea e koe te whakahau make menuconfig, ka puta mai he atanga kuputuhi watea ki mua i a koe e whakaatu ana i nga whakaahuatanga o nga tawhā na ? etc. I te nuinga o te waa, ka kohia e koe he whakaahuatanga o te tuatoru mai i nga whakaahuatanga o nga papa e rua, ka maka atu i nga momo whirihoranga PLL katoa mai i reira (te ahua nei, he hononga tenei ki te mana whakahaere mai i te rorohiko manaaki ma te PCIe, engari kaore tenei i te tino mohio) , I whiwhi ahau i etahi firmware, na, i te wa tika i runga i Mars i korero mai ki a au ma te UART e pa ana ki te commit hash i whakahiatohia mai, me te nui o te DRAM kei a au (engari i tuhia e au enei korero ki te pane).
Ko te mea pouri i muri i tenei ka mutu te whakautu a te poari ma te JTAG tukatuka, ka utaina mai i te kaari SD, aue, kaore i te tere i taku whirihoranga. I tetahi atu taha, i etahi wa ka tukuna e BootROM tetahi korero ERROR, i rahua ki te whawhai, ka puta tonu a U-Boot. I reira ka marama mai ki ahau: te ahua, i muri i te whakaara ano i te awaawa ki roto i te FPGA, kaore i te murua te mahara, kaore he wa ki te "whakangungu", aha atu. I roto i te poto, ka taea e koe ina puta he karere LOADING / hono ki te patuiro me te whakahau set variable $pc=0x80089800, na reira ka takahi i tenei uta roa (ko te tikanga, i runga i te whakaaro ko te wa whakamutunga ka pakaru wawe kaore he wa ki te uta i tetahi mea ki runga ake o te waehere taketake).
Ko te tikanga, he mea noa ka tino whakatio te kaitukatuka ka kore e taea e te kaiwhakairo JTAG te hono atu me nga karere?
Error: unable to halt hart 0
Error: dmcontrol=0x80000001
Error: dmstatus =0x00030c82Na, tatari! Kua kite kē au i tēnei! Ka puta ano tetahi mea i te wa e kati ana a TileLink, a kaore au i te whakawhirinaki ki te kaituhi o te kaiwhakahaere mahara - naku ano i tuhi... Na, i muri i te hanganga angitu tuatahi o te tukatuka i muri i te whakatika i te kaiwhakahaere, i kite ahau:
INIT
CMD0
CMD8
ACMD41
CMD58
CMD16
CMD18
LOADING
BOOT
U-Boot 2018.09-g39cd67d-dirty (Jul 03 2019 - 13:50:33 +0300)
DRAM: 1 GiB
MMC:
BEFORE LOAD ENVBEFORE FDTCONTROLADDRBEFORE LOADADDRIn: serial
Out: serial
Err: serial
Hit any key to stop autoboot: 3Ki tenei raina ke i mua In: serial kaua e aro - I ngana ahau ki te mohio ki runga i te tukatuka iri mena ka tika te mahi me te taiao. He aha te tikanga, "Kua iri penei mo te tekau meneti"? I te iti rawa i taea e ia ki te hūnuku me te haere ki te tahua whawhai! He rerekee iti: ahakoa ka utaina a U-Boot ki te 2^24 paita tuatahi mai i te kaari SD, ka tiimata ana, ka kape i a ia ano ki tetahi waahi tawhiti atu, ka tuhia ki te pane whirihoranga, ki nga wahitau teitei ake ranei o RAM. , me te mahi ELF relocation -characters, me te whakawhiti mana ki reira. Na: ko te ahua kua paahitia e matou tenei taumata me te whiwhi i te bonus kaore i piri tonu te tukatuka i muri i tera.
Na he aha te kore e mahi ana te taima? Te ahua nei kaore te karaka e mahi mo etahi take...
(gdb) x/x 0x0200bff8
0x200bff8: 0x00000000He aha mena ka huri a ringa koe i nga pere?
(gdb) set variable *0x0200bff8=310000000
(gdb) cNa:
Hit any key to stop autoboot: 0
MMC_SPI: 0 at 0:1 hz 20000000 mode 0Whakamutunga: karekau te karaka e pa ana. Koinei pea te take i kore ai e mahi te whakauru papapātuhi:
HiFive_U-Boot/cmd/bootmenu.c:
static void bootmenu_loop(struct bootmenu_data *menu,
enum bootmenu_key *key, int *esc)
{
int c;
while (!tstc()) {
WATCHDOG_RESET();
mdelay(10);
}
c = getc();
switch (*esc) {
case 0:
/* First char of ANSI escape sequence 'e' */
if (c == 'e') {
*esc = 1;
*key = KEY_NONE;
}
break;
case 1:
/* Second char of ANSI '[' */
if (c == '[') {
...Ko te raruraru i puta ko te mea he iti rawa toku mohio: I tapiritia e ahau te ki ki te whirihora tukatuka:
case DTSTimebase => BigInt(0)... i runga i te meka i kii te korero "ki te kore koe e mohio, waiho 0." I muri i nga mea katoa WithNBigCores I whakaturia noa e ahau ki te 1MHz (i te mea, na te ara, i tohuhia i roto i te whirihora U-Boot). Engari, he maamaa ahau, he maamaa: kaore au i te mohio ki reira, kei konei ko 25MHz! I te mutunga, kaore he mahi. I tangohia e ahau aku "whakapai" me te...
Hit any key to stop autoboot: 0
MMC_SPI: 0 at 0:1 hz 20000000 mode 0
## Unknown partition table type 0
libfdt fdt_path_offset() returned FDT_ERR_NOTFOUND
** No partition table - mmc 0 **
## Info: input data size = 34 = 0x22
Running uEnv.txt boot2...
## Error: "boot2" not defined
HiFive-Unleashed #Ka taea e koe te whakauru i nga whakahau! Hei tauira, i muri i te paheketanga iti, ka taea e koe te whakaaro ki te whakauru mmc_spi 1 10000000 0; mmc part, te whakaiti i te auau SPI mai i te 20MHz ki te 10MHz. He aha? Ana, ko te nuinga o te auau o 20MHz i tuhia ki roto i te whirihora, kei te tuhia tonu ki reira. Engari, ki taku mohio, ko nga hononga, he iti rawa i konei, ka mahi penei: ka wehewehe te waehere i te auau o te waahanga taputapu (ko taku ko 25MHz i nga waahi katoa) ma te whaainga, ka whakatau i te uara ka puta hei wehewehe i roto i te mana whakahaere. rehita. Ko te raruraru ko te mea mo te 115200Hz UART kei te ahua o nga mea e hiahiatia ana, katahi ka wehewehea e koe te 25000000 ki te 20000000 ka whiwhi koe i te 1, ara. ka mahi i te 25MHz. He mea noa tenei, engari ki te whakatauhia nga here, ko te tikanga kei te hiahia tetahi (engari kaore tenei i te tino mohio)... I te nuinga o te waa, he maamaa ake te whakatakoto me te neke haere - tawhiti, aue, mo te wa roa. Ko te 25MHz ehara i te Core i9.
Putanga papatohu
HiFive-Unleashed # env edit mmcsetup
edit: mmc_spi 1 10000000 0; mmc part
HiFive-Unleashed # boot
MMC_SPI: 1 at 0:1 hz 10000000 mode 0
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000800 0x0000ffde "Vfat Boot"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
type: data
guid: 76bd71fd-1694-4ff3-8197-bfa81699c2fb
2 0x00040800 0x002efaf4 "root"
attrs: 0x0000000000000000
type: 0fc63daf-8483-4772-8e79-3d69d8477de4
type: linux
guid: 9f3adcc5-440c-4772-b7b7-283124f38bf3
3 0x0000044c 0x000007e4 "uboot"
attrs: 0x0000000000000000
type: 5b193300-fc78-40cd-8002-e86c45580b47
guid: bb349257-0694-4e0f-9932-c801b4d76fa3
4 0x00000400 0x0000044b "uboot-env"
attrs: 0x0000000000000000
type: a09354ac-cd63-11e8-9aff-70b3d592f0fa
guid: 4db442d0-2109-435f-b858-be69629e7dbf
libfdt fdt_path_offset() returned FDT_ERR_NOTFOUND
2376 bytes read in 0 ms
Running uEnv.txt boot2...
15332118 bytes read in 0 ms
## Loading kernel from FIT Image at 90000000 ...
Using 'config-1' configuration
Trying 'bbl' kernel subimage
Description: BBL/SBI/riscv-pk
Type: Kernel Image
Compression: uncompressed
Data Start: 0x900000d4
Data Size: 74266 Bytes = 72.5 KiB
Architecture: RISC-V
OS: Linux
Load Address: 0x80000000
Entry Point: 0x80000000
Hash algo: sha256
Hash value: 28972571467c4ad0cf08a81d9cf92b9dffc5a7cb2e0cd12fdbb3216cf1f19cbd
Verifying Hash Integrity ... sha256+ OK
## Loading fdt from FIT Image at 90000000 ...
Using 'config-1' configuration
Trying 'fdt' fdt subimage
Description: unavailable
Type: Flat Device Tree
Compression: uncompressed
Data Start: 0x90e9d31c
Data Size: 6911 Bytes = 6.7 KiB
Architecture: RISC-V
Load Address: 0x81f00000
Hash algo: sha256
Hash value: 10b0244a5a9205357772ea1c4e135a4f882409262176d8c7191238cff65bb3a8
Verifying Hash Integrity ... sha256+ OK
Loading fdt from 0x90e9d31c to 0x81f00000
Booting using the fdt blob at 0x81f00000
## Loading loadables from FIT Image at 90000000 ...
Trying 'kernel' loadables subimage
Description: Linux kernel
Type: Kernel Image
Compression: uncompressed
Data Start: 0x900123e8
Data Size: 10781356 Bytes = 10.3 MiB
Architecture: RISC-V
OS: Linux
Load Address: 0x80200000
Entry Point: unavailable
Hash algo: sha256
Hash value: 72a9847164f4efb2ac9bae736f86efe7e3772ab1f01ae275e427e2a5389c84f0
Verifying Hash Integrity ... sha256+ OK
Loading loadables from 0x900123e8 to 0x80200000
## Loading loadables from FIT Image at 90000000 ...
Trying 'ramdisk' loadables subimage
Description: buildroot initramfs
Type: RAMDisk Image
Compression: gzip compressed
Data Start: 0x90a5a780
Data Size: 4467411 Bytes = 4.3 MiB
Architecture: RISC-V
OS: Linux
Load Address: 0x82000000
Entry Point: unavailable
Hash algo: sha256
Hash value: 883dfd33ca047e3ac10d5667ffdef7b8005cac58b95055c2c2beda44bec49bd0
Verifying Hash Integrity ... sha256+ OK
Loading loadables from 0x90a5a780 to 0x82000000Kaati, kua eke tatou ki te taumata e whai ake nei, engari kei te toia tonu. A, i etahi wa ka tauhiuhia ano he rereke. Ka taea e koe te kite i te mcause ma te tatari mo te waehere i te wahitau kua tohua $pc a muri iho si kia runga trap_entry. Ka taea e te kaihautu U-Boot te whakaputa noa mo te mcause = 0..4, na kia rite koe ki te mau ki roto i te peera he. Katahi ahau ka haere ki roto i te whirihora, ka timata ahau ki te titiro ki nga mea e huri ana ahau, ka mahara: kei roto conf/rvboot-fit.txt tuhia:
fitfile=image.fit
# below much match what's in FIT (ugha)Kaati, me whakauru nga konae katoa ki roto i te hanganga ture, whakakapia te rarangi whakahau kernel ki tetahi mea penei, na te mea he whakapae tera SIF0 - koinei te putanga i tetahi waahi ma PCIe:
-bootargs=console=ttySIF0,921600 debug
+bootargs=console=ttyS0,125200 debugA kia huri tatou i te hashing algorithm mai i SHA-256 ki MD5: Kaore au e hiahia ki te kaha cryptographic (ina koa ki te patuiro), he tino roa te waa, a mo te hopu i nga hapa tika i te wa e utaina ana, he ngawari rawa te MD5. He aha te mutunga? I timata matou ki te whakaoti i te taumata o mua kia tere ake (na te mea ngawari noa iho), a ka whakatuwherahia te waahanga e whai ake nei:
...
Verifying Hash Integrity ... md5+ OK
Loading loadables from 0x90a5a758 to 0x82000000
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
chosen {
linux,initrd-end = <0x00000000 0x83000000>;
linux,initrd-start = <0x00000000 0x82000000>;
riscv,kernel-end = <0x00000000 0x80a00000>;
riscv,kernel-start = <0x00000000 0x80200000>;
bootargs = "debug console=tty0 console=ttyS0,125200 root=/dev/mmcblk0p2 rootwait";
};
libfdt fdt_path_offset() returned FDT_ERR_NOTFOUND
chosen {
linux,initrd-end = <0x00000000 0x83000000>;
linux,initrd-start = <0x00000000 0x82000000>;
riscv,kernel-end = <0x00000000 0x80a00000>;
riscv,kernel-start = <0x00000000 0x80200000>;
bootargs = "debug console=tty0 console=ttyS0,125200 root=/dev/mmcblk0p2 rootwait";
};
Loading Kernel Image ... OK
Booting kernel in
3Engari karekau te karaka i te karaka...
(gdb) x/x 0x0200bff8
0x200bff8: 0x00000000Aue, te ahua o te whakatika i te karaka i puta he waahi, ahakoa ki taku whakaaro i tera wa i awhina. Kao, ko te tikanga me whakatika, engari me huri a ringa i nga pere ka kite he aha te mahi:
0x00000000bff6dbb0 in ?? ()
(gdb) set variable *0x0200bff8=1000000
(gdb) c
Continuing.
^C
Program received signal SIGINT, Interrupt.
0x00000000bff6dbb0 in ?? ()
(gdb) set variable *0x0200bff8=2000000
(gdb) c
Continuing.
^C
Program received signal SIGINT, Interrupt.
0x00000000bff6dbb0 in ?? ()
(gdb) set variable *0x0200bff8=3000000
(gdb) c
Continuing.I taua wā…
Loading Kernel Image ... OK
Booting kernel in
3
2
1
0
## Starting application at 0x80000000 ...Kao, ka haere au ki te whakaaunoa i te karaka - ki te kore tera pea ka whakatau ia ki te whakatikatika i te karaka ki reira!
I tenei wa, ko te wahitau o nga tohutohu o naianei e tohu ana ki tetahi waahi
0000000080001c20 <poweroff>:
80001c20: 1141 addi sp,sp,-16
80001c22: e022 sd s0,0(sp)
80001c24: 842a mv s0,a0
80001c26: 00005517 auipc a0,0x5
80001c2a: 0ca50513 addi a0,a0,202 # 80006cf0 <softfloat_countLeadingZeros8+0x558>
80001c2e: e406 sd ra,8(sp)
80001c30: f7fff0ef jal ra,80001bae <printm>
80001c34: 8522 mv a0,s0
80001c36: 267000ef jal ra,8000269c <finisher_exit>
80001c3a: 00010797 auipc a5,0x10
80001c3e: 41e78793 addi a5,a5,1054 # 80012058 <htif>
80001c42: 639c ld a5,0(a5)
80001c44: c399 beqz a5,80001c4a <poweroff+0x2a>
80001c46: 72c000ef jal ra,80002372 <htif_poweroff>
80001c4a: 45a1 li a1,8
80001c4c: 4501 li a0,0
80001c4e: dc7ff0ef jal ra,80001a14 <send_ipi_many>
80001c52: 10500073 wfi
80001c56: bff5 j 80001c52 <poweroff+0x32>i roto i te Berkeley Boot Loader kua utaina. Ko ahau ake, ko te mea e rangirua ana ahau mo tenei ko te whakahua htif — te atanga kaihautu i whakamahia mo te whakarewanga here o te kakano (ara, i te mahi tahi me te ARM kaihautu), i whakaaro ahau ko au anake. Heoi, ki te kitea e koe tenei mahi i roto i te waehere puna, ka kite koe ehara nga mea katoa i te kino:
void poweroff(uint16_t code)
{
printm("Power offrn");
finisher_exit(code);
if (htif) {
htif_poweroff();
} else {
send_ipi_many(0, IPI_HALT);
while (1) { asm volatile ("wfin"); }
}
}Quest: timata te karaka
Ko te rapu i nga rehita i CLINT ka arahi tatou ki
val io = IO(new Bundle {
val rtcTick = Bool(INPUT)
})
val time = RegInit(UInt(0, width = timeWidth))
when (io.rtcTick) { time := time + UInt(1) }E hono ana ki te RTC, ki te MockAON ngaro ranei, i whakaaro ahau i te tuatahi: “Na, he aha ta tatou i konei? Kaore i te marama? Kia whakawetohia!" I te mea kare ano au i te marama he aha te momo mahi makutu karaka kei reira, no reira ka whakahou ano ahau i tenei arorau ki roto. System.scala:
val rtcDivider = RegInit(0.asUInt(16.W)) // на всякий случай поддержу до 16ГГц, я оптимист :)
val mhzInt = p(DevKitFPGAFrequencyKey).toInt
// Преположим, частота равна целому числу мегагерц
rtcDivider := Mux(rtcDivider === (mhzInt - 1).U, 0.U, rtcDivider + 1.U)
outer.clintOpt.foreach { clint =>
clint.module.io.rtcTick := rtcDivider === 0.U
}Te haere ki te kernel Linux
I konei kua toia kee te korero, kua paku noa iho, no reira ka whakaahua ahau mai i runga ki raro:
I mau a BBL i te aroaro o FDT i 0xF0000000, engari kua whakatikahia e au! Ana, ka titiro ano... I kitea ki roto HiFive_U-Boot/arch/riscv/lib/boot.c, whakakapihia e 0x81F00000, kua tohua i roto i te whirihoranga whawhai U-Boot.
Na ka amuamu a BBL kaore he maharatanga. Ko taku ara kei roto i te mahi mem_prop, kei te aha riscv-pk/machine/fdt.c: mai reira i ako ahau me tohu koe i te fdt ram node hei device_type = "memory" - tera pea, me whakatikahia te kaihanga tukatuka, engari mo tenei wa ka tuhia e au ma te ringaringa - ahakoa, kua whakawhitia e ahau tenei konae.
Inaianei kua tae mai ki ahau te panui (kua whakahōputuhia, me te hokinga mai o te waka):
This is bbl's dummy_payload. To boot a real kernel, reconfigure bbl
with the flag --with-payload=PATH, then rebuild bbl. Alternatively,
bbl can be used in firmware-only mode by adding device-tree nodes
for an external payload and use QEMU's -bios and -kernel options.Ko te ahua kei te tohuhia nga whiringa ina hiahiatia riscv,kernel-start и riscv,kernel-end i roto i te DTB, engari ka poroporoaki nga kore. Patuiro query_chosen I whakaatu mai kei te ngana a BBL ki te tarai i tetahi wahitau 32-bit, engari ka puta mai i te takirua <0x0 0xADDR>, a ko te uara tuatahi ko nga moka iti rawa. Kua taapirihia ki te waahanga chosen
chosen {
#address-cells = <1>;
#size-cells = <0>;
...
}me te whakatika i te whakatipuranga o nga uara: kaua e tapiri 0x0 te huānga tuatahi.
Ko enei 100500 nga taahiraa ngawari ka ngawari ki te maataki i te hinganga o te korora:
Kupu huna
Verifying Hash Integrity ... md5+ OK
Loading loadables from 0x90a5a758 to 0x82000000
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
chosen {
linux,initrd-end = <0x83000000>;
linux,initrd-start = <0x82000000>;
riscv,kernel-end = <0x80a00000>;
riscv,kernel-start = <0x80200000>;
#address-cells = <0x00000001>;
#size-cells = <0x00000000>;
bootargs = "debug console=tty0 console=ttyS0,125200 root=/dev/mmcblk0p2 rootwait";
stdout-path = "uart0:38400n8";
};
libfdt fdt_path_offset() returned FDT_ERR_NOTFOUND
chosen {
linux,initrd-end = <0x83000000>;
linux,initrd-start = <0x82000000>;
riscv,kernel-end = <0x80a00000>;
riscv,kernel-start = <0x80200000>;
#address-cells = <0x00000001>;
#size-cells = <0x00000000>;
bootargs = "debug console=tty0 console=ttyS0,125200 root=/dev/mmcblk0p2 rootwait";
stdout-path = "uart0:38400n8";
};
Loading Kernel Image ... OK
Booting kernel in
3
2
1
0
## Starting application at 0x80000000 ...
bbl loader
SIFIVE, INC.
5555555555555555555555555
5555 5555
5555 5555
5555 5555
5555 5555555555555555555555
5555 555555555555555555555555
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5
SiFive RISC-V Core IP
[ 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 Wed Jul 3 21:29:21 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] On node 0 totalpages: 261632
[ 0.000000] DMA32 zone: 3577 pages used for memmap
[ 0.000000] DMA32 zone: 0 pages reserved
[ 0.000000] DMA32 zone: 261632 pages, LIFO batch:63
[ 0.000000] software IO TLB: mapped [mem 0xbb1fc000-0xbf1fc000] (64MB)(ko te moko e whakaatuhia ana e BBL, ko te mea whai tohu wa ka whakaatuhia e te kernel).
Waimarie, kaore au i te mohio kei te pehea nga waahi katoa, engari i runga i te RocketChip, ka hono koe i te patuiro ma JTAG, ka taea e koe te hopu mahanga mai i te pouaka - ka mutu tonu te kaipatu i tenei wa.
Program received signal SIGTRAP, Trace/breakpoint trap.
0xffffffe0000024ca in ?? ()
(gdb) bt
#0 0xffffffe0000024ca in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) file work/linux/vmlinux
A program is being debugged already.
Are you sure you want to change the file? (y or n) y
Reading symbols from work/linux/vmlinux...done.
(gdb) bt
#0 0xffffffe0000024ca in setup_smp () at /hdd/trosinenko/fpga/freedom-u-sdk/linux/arch/riscv/kernel/smpboot.c:75
#1 0x0000000000000000 in ?? ()
Backtrace stopped: frame did not save the PCherekore-u-sdk/linux/arch/riscv/kernel/smpboot.c:
void __init setup_smp(void)
{
struct device_node *dn = NULL;
int hart;
bool found_boot_cpu = false;
int cpuid = 1;
while ((dn = of_find_node_by_type(dn, "cpu"))) {
hart = riscv_of_processor_hartid(dn);
if (hart < 0)
continue;
if (hart == cpuid_to_hartid_map(0)) {
BUG_ON(found_boot_cpu);
found_boot_cpu = 1;
continue;
}
cpuid_to_hartid_map(cpuid) = hart;
set_cpu_possible(cpuid, true);
set_cpu_present(cpuid, true);
cpuid++;
}
BUG_ON(!found_boot_cpu); // < ВЫ НАХОДИТЕСЬ ЗДЕСЬ
}Ka rite ki te korero a te kata tawhito, Karekau te PTM i kitea, kei te whakahaere i te tauira rorohiko. Ana, kaore ranei e rere. Kua ngaro i roto i te matua tukatuka kotahi.
/* The lucky hart to first increment this variable will boot the other cores */
atomic_t hart_lottery;
unsigned long boot_cpu_hartid;He pai te korero i roto linux/arch/riscv/kernel/setup.c - he momo peita o te taiapa e whakamahi ana i te tikanga Tom Sawyer. I te nuinga o te waa, mo etahi take karekau he toa i tenei ra, ka whakawhitia te taonga ki te utu e whai ake nei...
I konei ka whakaaro ahau kia mutu te tuhinga roa.
Ka haere tonu. Ka puta he whawhai me tetahi pepeke maminga e huna ana mena ka tere haere koe ki runga me te hikoi kotahi.
Whakaaturanga panui tuhinga (hononga o waho):
Source: will.com