aboutsummaryrefslogtreecommitdiffstats
path: root/grub-core/kern/mips
diff options
context:
space:
mode:
Diffstat (limited to 'grub-core/kern/mips')
-rw-r--r--grub-core/kern/mips/cache.S45
-rw-r--r--grub-core/kern/mips/cache_flush.S23
-rw-r--r--grub-core/kern/mips/dl.c239
-rw-r--r--grub-core/kern/mips/init.c34
-rw-r--r--grub-core/kern/mips/qemu-mips/init.c58
-rw-r--r--grub-core/kern/mips/startup.S126
-rw-r--r--grub-core/kern/mips/yeeloong/init.c253
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);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-06 21:37:29 +0000