5d063cdc10
* configure.ac: Rename yeeloong platform to loongson. All users updated. * grub-core/Makefile.core.def (fwstart_fuloong): New image. * grub-core/boot/mips/loongson/fuloong.S: New file. * grub-core/boot/mips/loongson/fwstart.S: Wait for CS5536 to come up. Explicitly init CS5536. [FULOONG]: Don't use serial until CS5536 is available. Set GPIO based on dumps. (serial_hw_init) [FULOONG]: Handle CS5536 parts. [FULOONG]: Handle GPIO and memory controller differences. Parse machine type in $a2. * grub-core/boot/mips/startup_raw.S: Determine and save the architecture. * grub-core/bus/cs5536.c (gpiodump): Move to fwstart.S. (grub_cs5536_init_geode): Remove gpio part. Conditionalise DIVIL init on architecture type. * grub-core/kern/mips/loongson/init.c (grub_machine_init): Init SIS315E. Don't init at_keyboard on fuloong. (grub_halt): Support Fuloong. * grub-core/kern/mips/startup.S [LOONGSON]: Save $s7. * grub-core/loader/mips/linux.c (LOONGSON_MACHTYPE): Removed. (loongson_machtypes): New array. (grub_cmd_linux) [GRUB_MACHINE_MIPS_LOONGSON]: Pass the right machine type. * grub-core/term/ns8250.c (serial_get_divisor): New parameter port and config. All users updated. Handle CS5536 serial. * grub-core/term/serial.c (grub_serial_register): Conditionalise default port on machine type. Register serial as inactive. * grub-core/video/sis315pro.c: New file. * include/grub/cs5536.h (GRUB_CS5536_MSR_MAILBOX_CONFIG_ENABLED): New definition. (GRUB_CS5536_MSR_MAILBOX_CONFIG): Likewise. (GRUB_CS5536_MSR_DIVIL_LEG_IO_UART1_COM1): Likewise. (GRUB_CS5536_MSR_DIVIL_LEG_IO_UART2_COM3): Likewise. (GRUB_CS5536_MSR_DIVIL_UART1_CONF): Likewise. (GRUB_CS5536_MSR_DIVIL_UART2_CONF): Likewise. * include/grub/mips/loongson.h (GRUB_CPU_LOONGSON_SHUTDOWN_GPIO): Rename to ... (GRUB_CPU_YEELOONG_SHUTDOWN_GPIO): ... this. * include/grub/mips/loongson/kernel.h (GRUB_ARCH_MACHINE_YEELOONG): New definition. (GRUB_ARCH_MACHINE_FULOONG): Likewise. (grub_arch_machine): New extern var. * include/grub/mips/loongson/serial.h (GRUB_MACHINE_SERIAL_DIVISOR_115200): Renamed to ... (GRUB_MACHINE_SERIAL_PORT0_DIVISOR_115200): ... this. (GRUB_MACHINE_SERIAL_PORT): Renamed to ... (GRUB_MACHINE_SERIAL_PORT0): ... this. (GRUB_MACHINE_SERIAL_PORT2_DIVISOR_115200): New definition. (GRUB_MACHINE_SERIAL_PORT1): Likewise. (GRUB_MACHINE_SERIAL_PORT2): Likewise. (GRUB_MACHINE_SERIAL_PORTS): Include ports 1 and 2. * include/grub/term.h (grub_term_register_input_inactive): New inline function. (grub_term_register_output_inactive): Likewise. * include/grub/video.h (grub_video_driver_id): New value GRUB_VIDEO_DRIVER_SIS315PRO. * util/grub-mkimage.c (image_target_desc): Rename name to dirname. New field "names". All users updated. New field value IMAGE_FULOONG_FLASH. (generate_image): USe separate fwstart hashes for yeeloong and fuloong.
246 lines
5.4 KiB
ArmAsm
246 lines
5.4 KiB
ArmAsm
/* startup.S - Startup code for the MIPS. */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2009 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <grub/symbol.h>
|
|
#include <grub/offsets.h>
|
|
#include <grub/machine/memory.h>
|
|
#include <grub/machine/kernel.h>
|
|
#include <grub/offsets.h>
|
|
|
|
#define BASE_ADDR 8
|
|
|
|
.extern __bss_start
|
|
.extern _end
|
|
|
|
.globl __start, _start, start
|
|
.set noreorder
|
|
.set nomacro
|
|
__start:
|
|
_start:
|
|
start:
|
|
|
|
bal codestart
|
|
nop
|
|
base:
|
|
. = _start + GRUB_KERNEL_MACHINE_COMPRESSED_SIZE
|
|
compressed_size:
|
|
.long 0
|
|
. = _start + GRUB_KERNEL_MACHINE_UNCOMPRESSED_SIZE
|
|
uncompressed_size:
|
|
.long 0
|
|
codestart:
|
|
/* Save our base. */
|
|
move $s0, $ra
|
|
|
|
/* Parse arguments. Has to be done before relocation.
|
|
So need to do it in asm. */
|
|
#ifdef GRUB_MACHINE_MIPS_LOONGSON
|
|
move $s2, $zero
|
|
move $s3, $zero
|
|
move $s4, $zero
|
|
move $s5, $zero
|
|
move $s7, $zero
|
|
|
|
/* $a2 has the environment. */
|
|
addiu $t0, $zero, -0x10
|
|
and $t1, $a2, $t0
|
|
beq $t0, $t1, argfw
|
|
nop
|
|
move $t0, $a2
|
|
argcont:
|
|
lw $t1, 0($t0)
|
|
beq $t1, $zero, argdone
|
|
nop
|
|
#define DO_PARSE(str, reg) \
|
|
addiu $t2, $s0, (str-base);\
|
|
bal parsestr;\
|
|
nop ;\
|
|
beq $v0, $zero, 1f;\
|
|
nop ;\
|
|
b 2f;\
|
|
move reg, $v0; \
|
|
1:
|
|
#define DO_CHECKT1(str, val) \
|
|
move $t6, $t1 ;\
|
|
addiu $t7, $s0, (str - base);\
|
|
bal do_check ;\
|
|
li $t2, val
|
|
|
|
DO_PARSE (busclockstr, $s2)
|
|
DO_PARSE (cpuclockstr, $s3)
|
|
DO_PARSE (memsizestr, $s4)
|
|
DO_PARSE (highmemsizestr, $s5)
|
|
DO_CHECKT1 (pmon_yeeloong_verstr, GRUB_ARCH_MACHINE_YEELOONG)
|
|
DO_CHECKT1 (pmon_fuloong_verstr, GRUB_ARCH_MACHINE_FULOONG)
|
|
2:
|
|
b argcont
|
|
addiu $t0, $t0, 4
|
|
parsestr:
|
|
move $v0, $zero
|
|
move $t3, $t1
|
|
3:
|
|
lb $t4, 0($t2)
|
|
lb $t5, 0($t3)
|
|
addiu $t2, $t2, 1
|
|
addiu $t3, $t3, 1
|
|
beq $t5, $zero, 1f
|
|
nop
|
|
beq $t5, $t4, 3b
|
|
nop
|
|
bne $t4, $zero, 1f
|
|
nop
|
|
|
|
addiu $t3, $t3, 0xffff
|
|
digcont:
|
|
lb $t5, 0($t3)
|
|
/* Substract '0' from digit. */
|
|
addiu $t5, $t5, 0xffd0
|
|
bltz $t5, 1f
|
|
nop
|
|
addiu $t4, $t5, 0xfff7
|
|
bgtz $t4, 1f
|
|
nop
|
|
/* Multiply $v0 by 10 with bitshifts. */
|
|
sll $v0, $v0, 1
|
|
sll $t4, $v0, 2
|
|
addu $v0, $v0, $t4
|
|
addu $v0, $v0, $t5
|
|
addiu $t3, $t3, 1
|
|
b digcont
|
|
nop
|
|
1:
|
|
jr $ra
|
|
nop
|
|
busclockstr: .asciiz "busclock="
|
|
cpuclockstr: .asciiz "cpuclock="
|
|
memsizestr: .asciiz "memsize="
|
|
highmemsizestr: .asciiz "highmemsize="
|
|
machtype_yeeloong_str1: .asciiz "machtype=8.9"
|
|
machtype_yeeloong_str2: .asciiz "machtype=lemote-yeeloong-"
|
|
machtype_fuloong_str: .asciiz "machtype=lemote-fuloong-"
|
|
pmon_yeeloong_str: .asciiz "PMON_VER=LM8"
|
|
pmon_fuloong_str: .asciiz "PMON_VER=LM6"
|
|
pmon_yeeloong_verstr: .asciiz "Version=LM8"
|
|
pmon_fuloong_verstr: .asciiz "Version=LM6"
|
|
.p2align 2
|
|
|
|
argdone:
|
|
beq $a0, $zero, cmdlinedone
|
|
nop
|
|
#define DO_CHECKA1(str, val) \
|
|
lw $t6, 0($a1) ;\
|
|
addiu $t7, $s0, (str - base);\
|
|
bal do_check ;\
|
|
li $t2, val
|
|
DO_CHECKA1 (machtype_yeeloong_str1, GRUB_ARCH_MACHINE_YEELOONG)
|
|
DO_CHECKA1 (machtype_yeeloong_str2, GRUB_ARCH_MACHINE_YEELOONG)
|
|
DO_CHECKA1 (pmon_yeeloong_str, GRUB_ARCH_MACHINE_YEELOONG)
|
|
DO_CHECKA1 (machtype_fuloong_str, GRUB_ARCH_MACHINE_FULOONG)
|
|
DO_CHECKA1 (pmon_fuloong_str, GRUB_ARCH_MACHINE_FULOONG)
|
|
addiu $a0, $a0, -1
|
|
b argdone
|
|
addiu $a1, $a1, 4
|
|
do_check:
|
|
lb $t4, 0($t7)
|
|
beq $t4, $zero, 1f
|
|
lb $t3, 0($t6)
|
|
bne $t3, $t4, 2f
|
|
addiu $t6, $t6, 1
|
|
b do_check
|
|
addiu $t7, $t7, 1
|
|
1:
|
|
move $s7, $t2
|
|
2:
|
|
jr $ra
|
|
nop
|
|
argfw:
|
|
not $s7, $a2
|
|
cmdlinedone:
|
|
#endif
|
|
/* Copy the decompressor. */
|
|
lui $t1, %hi(base)
|
|
addiu $t1, $t1, %lo(base)
|
|
lui $t3, %hi(__bss_start)
|
|
addiu $t3, $t3, %lo(__bss_start)
|
|
move $t2, $s0
|
|
|
|
1:
|
|
beq $t1, $t3, 2f
|
|
lb $t4, 0($t2)
|
|
sb $t4, 0($t1)
|
|
addiu $t1, $t1, 1
|
|
b 1b
|
|
addiu $t2, $t2, 1
|
|
2:
|
|
/* Clean out its BSS. */
|
|
lui $t1, %hi(__bss_start)
|
|
addiu $t1, $t1, %lo(__bss_start)
|
|
lui $t2, %hi(_end)
|
|
addiu $t2, $t2, %lo(_end)
|
|
1:
|
|
beq $t1, $t2, 2f
|
|
nop
|
|
sb $zero, 0($t1)
|
|
b 1b
|
|
addiu $t1, $t1, 1
|
|
2:
|
|
lui $a0, %hi(base)
|
|
addiu $a0, $a0, %lo(base)
|
|
lui $a1, %hi(_end)
|
|
addiu $a1, %lo(_end)
|
|
subu $a1,$a1,$a0
|
|
|
|
#include "../../kern/mips/cache_flush.S"
|
|
|
|
/* Decompress the payload. */
|
|
lui $a0, %hi(__bss_start)
|
|
addiu $a0, $a0, %lo(__bss_start)
|
|
lui $t0, %hi(base)
|
|
addiu $t0, $t0, %lo(base)
|
|
subu $a0, $a0, $t0
|
|
addu $a0, $a0, $s0
|
|
|
|
lui $a1, %hi(GRUB_MACHINE_LINK_ADDR)
|
|
addiu $a1, %lo(GRUB_MACHINE_LINK_ADDR)
|
|
lw $a2, (GRUB_KERNEL_MACHINE_COMPRESSED_SIZE - BASE_ADDR)($s0)
|
|
lw $a3, (GRUB_KERNEL_MACHINE_UNCOMPRESSED_SIZE - BASE_ADDR)($s0)
|
|
move $s1, $a1
|
|
|
|
/* $a0 contains source compressed address, $a1 is destination,
|
|
$a2 is compressed size, $a3 is uncompressed size.
|
|
*/
|
|
move $s6, $a3
|
|
|
|
lui $t0, %hi(EXT_C(grub_decompress_core))
|
|
addiu $t0, $t0, %lo(EXT_C(grub_decompress_core))
|
|
|
|
lui $sp, %hi(_start - 256)
|
|
jalr $t0
|
|
addiu $sp, $sp, %lo(_start - 256)
|
|
|
|
move $a0, $s1
|
|
move $a1, $s6
|
|
|
|
#include "../../kern/mips/cache_flush.S"
|
|
|
|
lui $t1, %hi(GRUB_MACHINE_LINK_ADDR)
|
|
addiu $t1, %lo(GRUB_MACHINE_LINK_ADDR)
|
|
|
|
jr $t1
|
|
nop
|