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author | James <james.mckenzie@citrix.com> | 2012-11-16 10:41:01 +0000 |
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committer | James <james.mckenzie@citrix.com> | 2012-11-16 10:41:01 +0000 |
commit | 041d1ea37802bf7178a31a53f96c26efa6b8fb7b (patch) | |
tree | c193e84ad1237f25a79d0f6a267722e44c73f56a /grub-core/kern/mips | |
download | grub-1.99-041d1ea37802bf7178a31a53f96c26efa6b8fb7b.tar.gz grub-1.99-041d1ea37802bf7178a31a53f96c26efa6b8fb7b.tar.bz2 grub-1.99-041d1ea37802bf7178a31a53f96c26efa6b8fb7b.zip |
fish
Diffstat (limited to 'grub-core/kern/mips')
-rw-r--r-- | grub-core/kern/mips/cache.S | 45 | ||||
-rw-r--r-- | grub-core/kern/mips/cache_flush.S | 23 | ||||
-rw-r--r-- | grub-core/kern/mips/dl.c | 239 | ||||
-rw-r--r-- | grub-core/kern/mips/init.c | 34 | ||||
-rw-r--r-- | grub-core/kern/mips/qemu-mips/init.c | 58 | ||||
-rw-r--r-- | grub-core/kern/mips/startup.S | 126 | ||||
-rw-r--r-- | grub-core/kern/mips/yeeloong/init.c | 253 |
7 files changed, 778 insertions, 0 deletions
diff --git a/grub-core/kern/mips/cache.S b/grub-core/kern/mips/cache.S new file mode 100644 index 0000000..a4aa06f --- /dev/null +++ b/grub-core/kern/mips/cache.S @@ -0,0 +1,45 @@ + +#include <grub/symbol.h> + + .set noreorder + .set nomacro + +FUNCTION (grub_cpu_flush_cache) +FUNCTION (grub_arch_sync_caches) +#include "cache_flush.S" + j $ra + +FUNCTION (grub_arch_sync_dma_caches) + move $t2, $a0 + addu $t3, $a0, $a1 + srl $t2, $t2, 5 + sll $t2, $t2, 5 + addu $t3, $t3, 0x1f + srl $t3, $t3, 5 + sll $t3, $t3, 5 + move $t0, $t2 + subu $t1, $t3, $t2 +1: + cache 1, 0($t0) + addiu $t1, $t1, 0xffff + bne $t1, $zero, 1b + addiu $t0, $t0, 0x1 + sync + move $t0, $t2 + subu $t1, $t3, $t2 +2: + cache 0, 0($t0) + addiu $t1, $t1, 0xffff + bne $t1, $zero, 2b + addiu $t0, $t0, 0x1 + sync + move $t0, $t2 + subu $t1, $t3, $t2 +2: + cache 23, 0($t0) + addiu $t1, $t1, 0xffff + bne $t1, $zero, 2b + addiu $t0, $t0, 0x1 + sync + + jr $ra
\ No newline at end of file diff --git a/grub-core/kern/mips/cache_flush.S b/grub-core/kern/mips/cache_flush.S new file mode 100644 index 0000000..11096c0 --- /dev/null +++ b/grub-core/kern/mips/cache_flush.S @@ -0,0 +1,23 @@ + move $t2, $a0 + addu $t3, $a0, $a1 + srl $t2, $t2, 5 + sll $t2, $t2, 5 + addu $t3, $t3, 0x1f + srl $t3, $t3, 5 + sll $t3, $t3, 5 + move $t0, $t2 + subu $t1, $t3, $t2 +1: + cache 1, 0($t0) + addiu $t1, $t1, 0xffff + bne $t1, $zero, 1b + addiu $t0, $t0, 0x1 + sync + move $t0, $t2 + subu $t1, $t3, $t2 +2: + cache 0, 0($t0) + addiu $t1, $t1, 0xffff + bne $t1, $zero, 2b + addiu $t0, $t0, 0x1 + sync diff --git a/grub-core/kern/mips/dl.c b/grub-core/kern/mips/dl.c new file mode 100644 index 0000000..e17e9f3 --- /dev/null +++ b/grub-core/kern/mips/dl.c @@ -0,0 +1,239 @@ +/* dl-386.c - arch-dependent part of loadable module support */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2002,2005,2007,2009 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/dl.h> +#include <grub/elf.h> +#include <grub/misc.h> +#include <grub/err.h> +#include <grub/cpu/types.h> +#include <grub/mm.h> + +/* Dummy __gnu_local_gp. Resolved by linker. */ +static char __gnu_local_gp_dummy; + +/* Check if EHDR is a valid ELF header. */ +grub_err_t +grub_arch_dl_check_header (void *ehdr) +{ + Elf_Ehdr *e = ehdr; + + /* Check the magic numbers. */ +#ifdef WORDS_BIGENDIAN + if (e->e_ident[EI_CLASS] != ELFCLASS32 + || e->e_ident[EI_DATA] != ELFDATA2MSB + || e->e_machine != EM_MIPS) +#else + if (e->e_ident[EI_CLASS] != ELFCLASS32 + || e->e_ident[EI_DATA] != ELFDATA2LSB + || e->e_machine != EM_MIPS) +#endif + return grub_error (GRUB_ERR_BAD_OS, "invalid arch specific ELF magic"); + + return GRUB_ERR_NONE; +} + +/* Relocate symbols. */ +grub_err_t +grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr) +{ + Elf_Ehdr *e = ehdr; + Elf_Shdr *s; + Elf_Word entsize; + unsigned i; + grub_size_t gp_size = 0; + /* FIXME: suboptimal. */ + grub_uint32_t *gp, *gpptr; + grub_uint32_t gp0; + + /* Find a symbol table. */ + for (i = 0, s = (Elf_Shdr *) ((char *) e + e->e_shoff); + i < e->e_shnum; + i++, s = (Elf_Shdr *) ((char *) s + e->e_shentsize)) + if (s->sh_type == SHT_SYMTAB) + break; + + if (i == e->e_shnum) + return grub_error (GRUB_ERR_BAD_MODULE, "no symtab found"); + + entsize = s->sh_entsize; + + /* Find reginfo. */ + for (i = 0, s = (Elf_Shdr *) ((char *) e + e->e_shoff); + i < e->e_shnum; + i++, s = (Elf_Shdr *) ((char *) s + e->e_shentsize)) + if (s->sh_type == SHT_MIPS_REGINFO) + break; + + if (i == e->e_shnum) + return grub_error (GRUB_ERR_BAD_MODULE, "no reginfo found"); + + gp0 = ((grub_uint32_t *)((char *) e + s->sh_offset))[5]; + + for (i = 0, s = (Elf_Shdr *) ((char *) e + e->e_shoff); + i < e->e_shnum; + i++, s = (Elf_Shdr *) ((char *) s + e->e_shentsize)) + if (s->sh_type == SHT_REL) + { + grub_dl_segment_t seg; + + /* Find the target segment. */ + for (seg = mod->segment; seg; seg = seg->next) + if (seg->section == s->sh_info) + break; + + if (seg) + { + Elf_Rel *rel, *max; + + for (rel = (Elf_Rel *) ((char *) e + s->sh_offset), + max = rel + s->sh_size / s->sh_entsize; + rel < max; + rel++) + switch (ELF_R_TYPE (rel->r_info)) + { + case R_MIPS_GOT16: + case R_MIPS_CALL16: + case R_MIPS_GPREL32: + gp_size += 4; + break; + } + } + } + + if (gp_size > 0x08000) + return grub_error (GRUB_ERR_OUT_OF_RANGE, "__gnu_local_gp is too big\n"); + + gpptr = gp = grub_malloc (gp_size); + if (!gp) + return grub_errno; + + for (i = 0, s = (Elf_Shdr *) ((char *) e + e->e_shoff); + i < e->e_shnum; + i++, s = (Elf_Shdr *) ((char *) s + e->e_shentsize)) + if (s->sh_type == SHT_REL) + { + grub_dl_segment_t seg; + + /* Find the target segment. */ + for (seg = mod->segment; seg; seg = seg->next) + if (seg->section == s->sh_info) + break; + + if (seg) + { + Elf_Rel *rel, *max; + + for (rel = (Elf_Rel *) ((char *) e + s->sh_offset), + max = rel + s->sh_size / s->sh_entsize; + rel < max; + rel++) + { + Elf_Word *addr; + Elf_Sym *sym; + + if (seg->size < rel->r_offset) + return grub_error (GRUB_ERR_BAD_MODULE, + "reloc offset is out of the segment"); + + addr = (Elf_Word *) ((char *) seg->addr + rel->r_offset); + sym = (Elf_Sym *) ((char *) mod->symtab + + entsize * ELF_R_SYM (rel->r_info)); + if (sym->st_value == (grub_addr_t) &__gnu_local_gp_dummy) + sym->st_value = (grub_addr_t) gp; + + switch (ELF_R_TYPE (rel->r_info)) + { + case R_MIPS_HI16: + { + grub_uint32_t value; + Elf_Rel *rel2; + + /* Handle partner lo16 relocation. Lower part is + treated as signed. Hence add 0x8000 to compensate. + */ + value = (*(grub_uint16_t *) addr << 16) + + sym->st_value + 0x8000; + for (rel2 = rel + 1; rel2 < max; rel2++) + if (ELF_R_SYM (rel2->r_info) + == ELF_R_SYM (rel->r_info) + && ELF_R_TYPE (rel2->r_info) == R_MIPS_LO16) + { + value += *(grub_int16_t *) + ((char *) seg->addr + rel2->r_offset); + break; + } + *(grub_uint16_t *) addr = (value >> 16) & 0xffff; + } + break; + case R_MIPS_LO16: + *(grub_uint16_t *) addr += (sym->st_value) & 0xffff; + break; + case R_MIPS_32: + *(grub_uint32_t *) addr += sym->st_value; + break; + case R_MIPS_GPREL32: + *(grub_uint32_t *) addr = sym->st_value + + *(grub_uint32_t *) addr + gp0 - (grub_uint32_t)gp; + break; + + case R_MIPS_26: + { + grub_uint32_t value; + grub_uint32_t raw; + raw = (*(grub_uint32_t *) addr) & 0x3ffffff; + value = raw << 2; + value += sym->st_value; + raw = (value >> 2) & 0x3ffffff; + + *(grub_uint32_t *) addr = + raw | ((*(grub_uint32_t *) addr) & 0xfc000000); + } + break; + case R_MIPS_GOT16: + case R_MIPS_CALL16: + /* FIXME: reuse*/ + *gpptr = sym->st_value + *(grub_uint16_t *) addr; + *(grub_uint16_t *) addr + = sizeof (grub_uint32_t) * (gpptr - gp); + gpptr++; + break; + case R_MIPS_JALR: + break; + default: + { + grub_free (gp); + return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, + "Unknown relocation type %d\n", + ELF_R_TYPE (rel->r_info)); + } + break; + } + } + } + } + + return GRUB_ERR_NONE; +} + +void +grub_arch_dl_init_linker (void) +{ + grub_dl_register_symbol ("__gnu_local_gp", &__gnu_local_gp_dummy, 0); +} + diff --git a/grub-core/kern/mips/init.c b/grub-core/kern/mips/init.c new file mode 100644 index 0000000..f220108 --- /dev/null +++ b/grub-core/kern/mips/init.c @@ -0,0 +1,34 @@ +/* + * 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/kernel.h> +#include <grub/env.h> + +void +grub_machine_set_prefix (void) +{ + grub_env_set ("prefix", grub_prefix); +} + +extern char _end[]; + +grub_addr_t +grub_arch_modules_addr (void) +{ + return (grub_addr_t) _end; +} diff --git a/grub-core/kern/mips/qemu-mips/init.c b/grub-core/kern/mips/qemu-mips/init.c new file mode 100644 index 0000000..f2bb652 --- /dev/null +++ b/grub-core/kern/mips/qemu-mips/init.c @@ -0,0 +1,58 @@ +#include <grub/kernel.h> +#include <grub/misc.h> +#include <grub/env.h> +#include <grub/time.h> +#include <grub/types.h> +#include <grub/misc.h> +#include <grub/mm.h> +#include <grub/time.h> +#include <grub/machine/kernel.h> +#include <grub/machine/memory.h> +#include <grub/cpu/kernel.h> + +#define RAMSIZE (*(grub_uint32_t *) ((16 << 20) - 264)) + +grub_uint32_t +grub_get_rtc (void) +{ + static int calln = 0; + return calln++; +} + +void +grub_machine_init (void) +{ + grub_mm_init_region ((void *) GRUB_MACHINE_MEMORY_USABLE, + RAMSIZE - (GRUB_MACHINE_MEMORY_USABLE & 0x7fffffff)); + grub_install_get_time_ms (grub_rtc_get_time_ms); +} + +void +grub_machine_fini (void) +{ +} + +void +grub_exit (void) +{ + while (1); +} + +void +grub_halt (void) +{ + while (1); +} + +void +grub_reboot (void) +{ + while (1); +} + +grub_err_t +grub_machine_mmap_iterate (grub_memory_hook_t hook) +{ + hook (0, RAMSIZE, GRUB_MEMORY_AVAILABLE); + return GRUB_ERR_NONE; +} diff --git a/grub-core/kern/mips/startup.S b/grub-core/kern/mips/startup.S new file mode 100644 index 0000000..ae0e0b1 --- /dev/null +++ b/grub-core/kern/mips/startup.S @@ -0,0 +1,126 @@ +/* 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/offsets.h> + +#define BASE_ADDR 8 + + .globl __start, _start, start + .set noreorder + .set nomacro +__start: +_start: +start: +.extern __bss_start +.extern _end + bal cont + nop + + . = _start + GRUB_KERNEL_MIPS_YEELOONG_TOTAL_MODULE_SIZE +total_module_size: + .long 0 + + . = _start + GRUB_KERNEL_MACHINE_PREFIX + +VARIABLE(grub_prefix) + + /* to be filled by grub-mkimage */ + + /* + * Leave some breathing room for the prefix. + */ + + . = _start + GRUB_KERNEL_MACHINE_PREFIX_END +#ifdef GRUB_MACHINE_MIPS_YEELOONG +VARIABLE (grub_arch_busclock) + .long 0 +VARIABLE (grub_arch_cpuclock) + .long 0 +VARIABLE (grub_arch_memsize) + .long 0 +VARIABLE (grub_arch_highmemsize) + .long 0 +#endif +cont: + /* Save our base. */ + move $s0, $ra + +#ifdef GRUB_MACHINE_MIPS_YEELOONG + lui $t1, %hi(grub_arch_busclock) + addiu $t1, %lo(grub_arch_busclock) + sw $s2, 0($t1) + sw $s3, 4($t1) + sw $s4, 8($t1) + sw $s5, 12($t1) +#endif + + /* Move the modules out of BSS. */ + lui $t2, %hi(__bss_start) + addiu $t2, %lo(__bss_start) + + lui $t1, %hi(_end) + addiu $t1, %lo(_end) + addiu $t1, (GRUB_KERNEL_MACHINE_MOD_ALIGN - 1) + li $t3, (GRUB_KERNEL_MACHINE_MOD_ALIGN - 1) + nor $t3, $t3, $0 + and $t1, $t1, $t3 + + lw $t3, (GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE - BASE_ADDR)($s0) + + /* Backward copy. */ + add $t1, $t1, $t3 + add $t2, $t2, $t3 + addiu $t1, $t1, -1 + addiu $t2, $t2, -1 + + /* $t2 is source. $t1 is destination. $t3 is size. */ +modulesmovcont: + beq $t3, $0, modulesmovdone + nop + lb $t4, 0($t2) + sb $t4, 0($t1) + addiu $t2, $t2, -1 + addiu $t1, $t1, -1 + b modulesmovcont + addiu $t3, $t3, -1 +modulesmovdone: + + /* Clean BSS. */ + + lui $t1, %hi(__bss_start) + addiu $t1, $t1, %lo(__bss_start) + lui $t2, %hi(_end) + addiu $t2, $t2, %lo(_end) +bsscont: + sb $0,0($t1) + addiu $t1, $t1, 1 + sltu $t3, $t1, $t2 + bne $t3, $0, bsscont + nop + + lui $t1, %hi(grub_main) + addiu $t1, %lo(grub_main) + + lui $sp, %hi(GRUB_MACHINE_MEMORY_STACK_HIGH) + jr $t1 + addiu $sp, $sp, %lo(GRUB_MACHINE_MEMORY_STACK_HIGH) + diff --git a/grub-core/kern/mips/yeeloong/init.c b/grub-core/kern/mips/yeeloong/init.c new file mode 100644 index 0000000..7a48d69 --- /dev/null +++ b/grub-core/kern/mips/yeeloong/init.c @@ -0,0 +1,253 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2009,2010 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/kernel.h> +#include <grub/misc.h> +#include <grub/env.h> +#include <grub/time.h> +#include <grub/types.h> +#include <grub/misc.h> +#include <grub/mm.h> +#include <grub/time.h> +#include <grub/machine/kernel.h> +#include <grub/machine/memory.h> +#include <grub/memory.h> +#include <grub/mips/loongson.h> +#include <grub/cs5536.h> +#include <grub/term.h> +#include <grub/machine/ec.h> + +extern void grub_video_sm712_init (void); +extern void grub_video_init (void); +extern void grub_bitmap_init (void); +extern void grub_font_init (void); +extern void grub_gfxterm_init (void); +extern void grub_at_keyboard_init (void); +extern void grub_serial_init (void); +extern void grub_terminfo_init (void); +extern void grub_keylayouts_init (void); +extern void grub_boot_init (void); + +/* FIXME: use interrupt to count high. */ +grub_uint64_t +grub_get_rtc (void) +{ + static grub_uint32_t high = 0; + static grub_uint32_t last = 0; + grub_uint32_t low; + + asm volatile ("mfc0 %0, " GRUB_CPU_LOONGSON_COP0_TIMER_COUNT : "=r" (low)); + if (low < last) + high++; + last = low; + + return (((grub_uint64_t) high) << 32) | low; +} + +grub_err_t +grub_machine_mmap_iterate (grub_memory_hook_t hook) +{ + hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20, + GRUB_MEMORY_AVAILABLE); + hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20, + GRUB_MEMORY_AVAILABLE); + return GRUB_ERR_NONE; +} + +static void +init_pci (void) +{ + auto int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid); + int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid) + { + grub_pci_address_t addr; + /* FIXME: autoscan for BARs and devices. */ + switch (pciid) + { + case GRUB_YEELOONG_OHCI_PCIID: + addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0); + grub_pci_write (addr, 0x5025000); + addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); + grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE + | GRUB_PCI_COMMAND_PARITY_ERROR + | GRUB_PCI_COMMAND_BUS_MASTER + | GRUB_PCI_COMMAND_MEM_ENABLED); + + addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS); + grub_pci_write_word (addr, 0x0200 | GRUB_PCI_STATUS_CAPABILITIES); + break; + case GRUB_YEELOONG_EHCI_PCIID: + addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0); + grub_pci_write (addr, 0x5026000); + addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); + grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE + | GRUB_PCI_COMMAND_PARITY_ERROR + | GRUB_PCI_COMMAND_BUS_MASTER + | GRUB_PCI_COMMAND_MEM_ENABLED); + + addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS); + grub_pci_write_word (addr, (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT) + | GRUB_PCI_STATUS_CAPABILITIES); + break; + } + return 0; + } + + *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_LO) = 0x8000000c; + *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_HI) = 0xffffffff; + + /* Setup PCI controller. */ + *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_COMMAND)) + = GRUB_PCI_COMMAND_PARITY_ERROR | GRUB_PCI_COMMAND_BUS_MASTER + | GRUB_PCI_COMMAND_MEM_ENABLED; + *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_STATUS)) + = (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT) + | GRUB_PCI_STATUS_FAST_B2B_CAPABLE | GRUB_PCI_STATUS_66MHZ_CAPABLE + | GRUB_PCI_STATUS_CAPABILITIES; + + *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_CACHELINE)) = 0xff; + *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_ADDRESS_REG0)) + = 0x80000000 | GRUB_PCI_ADDR_MEM_TYPE_64 | GRUB_PCI_ADDR_MEM_PREFETCH; + *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_ADDRESS_REG1)) = 0; + + grub_pci_iterate (set_card); +} + +void +grub_machine_init (void) +{ + grub_addr_t modend; + + /* FIXME: measure this. */ + if (grub_arch_busclock == 0) + { + grub_arch_busclock = 66000000; + grub_arch_cpuclock = 797000000; + } + + grub_install_get_time_ms (grub_rtc_get_time_ms); + + if (grub_arch_memsize == 0) + { + grub_port_t smbbase; + grub_err_t err; + grub_pci_device_t dev; + struct grub_smbus_spd spd; + unsigned totalmem; + int i; + + if (!grub_cs5536_find (&dev)) + grub_fatal ("No CS5536 found\n"); + + err = grub_cs5536_init_smbus (dev, 0x7ff, &smbbase); + if (err) + grub_fatal ("Couldn't init SMBus: %s\n", grub_errmsg); + + /* Yeeloong has only one memory slot. */ + err = grub_cs5536_read_spd (smbbase, GRUB_SMB_RAM_START_ADDR, &spd); + if (err) + grub_fatal ("Couldn't read SPD: %s\n", grub_errmsg); + for (i = 5; i < 13; i++) + if (spd.ddr2.rank_capacity & (1 << (i & 7))) + break; + /* Something is wrong. */ + if (i == 13) + totalmem = 256; + else + totalmem = ((spd.ddr2.num_of_ranks + & GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_MASK) + 1) << (i + 2); + + if (totalmem >= 256) + { + grub_arch_memsize = 256; + grub_arch_highmemsize = totalmem - 256; + } + else + { + grub_arch_memsize = (totalmem >> 20); + grub_arch_highmemsize = 0; + } + + grub_cs5536_init_geode (dev); + + init_pci (); + } + + modend = grub_modules_get_end (); + grub_mm_init_region ((void *) modend, (grub_arch_memsize << 20) + - (modend - GRUB_ARCH_LOWMEMVSTART)); + /* FIXME: use upper memory as well. */ + + /* Initialize output terminal (can't be done earlier, as gfxterm + relies on a working heap. */ + grub_video_init (); + grub_video_sm712_init (); + grub_bitmap_init (); + grub_font_init (); + grub_gfxterm_init (); + + grub_keylayouts_init (); + grub_at_keyboard_init (); + + grub_terminfo_init (); + grub_serial_init (); + + grub_boot_init (); +} + +void +grub_machine_fini (void) +{ +} + +void +grub_halt (void) +{ + grub_outb (grub_inb (GRUB_CPU_LOONGSON_GPIOCFG) + & ~GRUB_CPU_LOONGSON_SHUTDOWN_GPIO, GRUB_CPU_LOONGSON_GPIOCFG); + + grub_millisleep (1500); + + grub_printf ("Shutdown failed\n"); + grub_refresh (); + while (1); +} + +void +grub_exit (void) +{ + grub_halt (); +} + +void +grub_reboot (void) +{ + grub_write_ec (GRUB_MACHINE_EC_COMMAND_REBOOT); + + grub_millisleep (1500); + + grub_printf ("Reboot failed\n"); + grub_refresh (); + while (1); +} + |