diff options
Diffstat (limited to 'grub-core/kern/sparc64/ieee1275')
| -rw-r--r-- | grub-core/kern/sparc64/ieee1275/crt0.S | 94 | ||||
| -rw-r--r-- | grub-core/kern/sparc64/ieee1275/ieee1275.c | 91 | ||||
| -rw-r--r-- | grub-core/kern/sparc64/ieee1275/init.c | 174 |
3 files changed, 359 insertions, 0 deletions
diff --git a/grub-core/kern/sparc64/ieee1275/crt0.S b/grub-core/kern/sparc64/ieee1275/crt0.S new file mode 100644 index 0000000..cebdca2 --- /dev/null +++ b/grub-core/kern/sparc64/ieee1275/crt0.S @@ -0,0 +1,94 @@ +/* crt0.S - Startup code for the Sparc64. */ +/* + * 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/machine/kernel.h> +#include <grub/offsets.h> + + .text + .align 4 + .globl _start +_start: + ba codestart + mov %o4, %o0 + + . = EXT_C(_start) + GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE + +VARIABLE(grub_total_module_size) + .word 0 +VARIABLE(grub_kernel_image_size) + .word 0 +VARIABLE(grub_compressed_size) + .word 0 +VARIABLE(grub_prefix) + /* to be filled by grub-mkimage */ + + /* + * Leave some breathing room for the prefix. + */ + + . = EXT_C(_start) + GRUB_KERNEL_MACHINE_PREFIX_END + +codestart: + /* Copy the modules past the end of the kernel image. + * They are currently sitting in the BSS. + */ + sethi %hi(__bss_start), %o2 + or %o2, %lo(__bss_start), %o2 + sethi %hi(_end), %o3 + or %o3, %lo(_end), %o3 + sethi %hi(grub_total_module_size), %o4 + lduw [%o4 + %lo(grub_total_module_size)], %o4 + + add %o2, %o4, %o2 + add %o3, %o4, %o3 + + /* Save ieee1275 stack for future use by booter. */ + mov %o6, %o1 + /* Our future stack. */ + sethi %hi(GRUB_KERNEL_MACHINE_STACK_SIZE), %o5 + or %o5, %lo(GRUB_KERNEL_MACHINE_STACK_SIZE), %o5 + add %o3, %o5, %o6 + and %o6, ~0xff, %o6 + sub %o6, 2047, %o6 + + sub %o2, 4, %o2 + sub %o3, 4, %o3 +1: lduw [%o2], %o5 + stw %o5, [%o3] + subcc %o4, 4, %o4 + sub %o2, 4, %o2 + bne,pt %icc, 1b + sub %o3, 4, %o3 + + /* Now it's safe to clear out the BSS. */ + sethi %hi(__bss_start), %o2 + or %o2, %lo(__bss_start), %o2 + sethi %hi(_end), %o3 + or %o3, %lo(_end), %o3 +1: stx %g0, [%o2] + add %o2, 8, %o2 + cmp %o2, %o3 + blt,pt %xcc, 1b + nop + sethi %hi(grub_ieee1275_original_stack), %o2 + stx %o1, [%o2 + %lo(grub_ieee1275_original_stack)] + sethi %hi(grub_ieee1275_entry_fn), %o2 + call grub_main + stx %o0, [%o2 + %lo(grub_ieee1275_entry_fn)] +1: ba,a 1b diff --git a/grub-core/kern/sparc64/ieee1275/ieee1275.c b/grub-core/kern/sparc64/ieee1275/ieee1275.c new file mode 100644 index 0000000..53be692 --- /dev/null +++ b/grub-core/kern/sparc64/ieee1275/ieee1275.c @@ -0,0 +1,91 @@ +/* + * 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/ieee1275/ieee1275.h> +#include <grub/types.h> + +/* Sun specific ieee1275 interfaces used by GRUB. */ + +int +grub_ieee1275_claim_vaddr (grub_addr_t vaddr, grub_size_t size) +{ + struct claim_vaddr_args + { + struct grub_ieee1275_common_hdr common; + grub_ieee1275_cell_t method; + grub_ieee1275_cell_t ihandle; + grub_ieee1275_cell_t align; + grub_ieee1275_cell_t size; + grub_ieee1275_cell_t virt; + grub_ieee1275_cell_t catch_result; + } + args; + + INIT_IEEE1275_COMMON (&args.common, "call-method", 5, 2); + args.method = (grub_ieee1275_cell_t) "claim"; + args.ihandle = grub_ieee1275_mmu; + args.align = 0; + args.size = size; + args.virt = vaddr; + args.catch_result = (grub_ieee1275_cell_t) -1; + + if (IEEE1275_CALL_ENTRY_FN (&args) == -1) + return -1; + return args.catch_result; +} + +int +grub_ieee1275_alloc_physmem (grub_addr_t *paddr, grub_size_t size, + grub_uint32_t align) +{ + grub_uint32_t memory_ihandle; + struct alloc_physmem_args + { + struct grub_ieee1275_common_hdr common; + grub_ieee1275_cell_t method; + grub_ieee1275_cell_t ihandle; + grub_ieee1275_cell_t align; + grub_ieee1275_cell_t size; + grub_ieee1275_cell_t catch_result; + grub_ieee1275_cell_t phys_high; + grub_ieee1275_cell_t phys_low; + } + args; + grub_ssize_t actual = 0; + + grub_ieee1275_get_property (grub_ieee1275_chosen, "memory", + &memory_ihandle, sizeof (memory_ihandle), + &actual); + if (actual != sizeof (memory_ihandle)) + return -1; + + if (!align) + align = 1; + + INIT_IEEE1275_COMMON (&args.common, "call-method", 4, 3); + args.method = (grub_ieee1275_cell_t) "claim"; + args.ihandle = memory_ihandle; + args.align = (align ? align : 1); + args.size = size; + if (IEEE1275_CALL_ENTRY_FN (&args) == -1) + return -1; + + *paddr = args.phys_low; + + return args.catch_result; +} diff --git a/grub-core/kern/sparc64/ieee1275/init.c b/grub-core/kern/sparc64/ieee1275/init.c new file mode 100644 index 0000000..72ee1f1 --- /dev/null +++ b/grub-core/kern/sparc64/ieee1275/init.c @@ -0,0 +1,174 @@ +/* init.c -- Initialize GRUB on SPARC64. */ +/* + * 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/mm.h> +#include <grub/env.h> +#include <grub/err.h> +#include <grub/misc.h> +#include <grub/time.h> +#include <grub/machine/boot.h> +#include <grub/ieee1275/console.h> +#include <grub/machine/kernel.h> +#include <grub/machine/time.h> +#include <grub/ieee1275/ofdisk.h> +#include <grub/ieee1275/ieee1275.h> + +grub_addr_t grub_ieee1275_original_stack; + +void +grub_exit (void) +{ + grub_ieee1275_exit (); +} + +static grub_uint64_t +ieee1275_get_time_ms (void) +{ + grub_uint32_t msecs = 0; + + grub_ieee1275_milliseconds (&msecs); + + return msecs; +} + +grub_uint32_t +grub_get_rtc (void) +{ + return ieee1275_get_time_ms (); +} + +grub_addr_t +grub_arch_modules_addr (void) +{ + extern char _end[]; + return (grub_addr_t) _end; +} + +void +grub_machine_set_prefix (void) +{ + if (grub_prefix[0] != '(') + { + char bootpath[IEEE1275_MAX_PATH_LEN]; + char *prefix, *path, *colon; + grub_ssize_t actual; + + if (grub_ieee1275_get_property (grub_ieee1275_chosen, "bootpath", + &bootpath, sizeof (bootpath), &actual)) + { + /* Should never happen. */ + grub_printf ("/chosen/bootpath property missing!\n"); + grub_env_set ("prefix", ""); + return; + } + + /* Transform an OF device path to a GRUB path. */ + colon = grub_strchr (bootpath, ':'); + if (colon) + { + char *part = colon + 1; + + /* Consistently provide numbered partitions to GRUB. + OpenBOOT traditionally uses alphabetical partition + specifiers. */ + if (part[0] >= 'a' && part[0] <= 'z') + part[0] = '1' + (part[0] - 'a'); + } + prefix = grub_ieee1275_encode_devname (bootpath); + + path = grub_xasprintf("%s%s", prefix, grub_prefix); + + grub_strcpy (grub_prefix, path); + + grub_free (path); + grub_free (prefix); + } + + grub_env_set ("prefix", grub_prefix); +} + +static void +grub_heap_init (void) +{ + grub_mm_init_region ((void *) (grub_modules_get_end () + + GRUB_KERNEL_MACHINE_STACK_SIZE), 0x200000); +} + +static void +grub_parse_cmdline (void) +{ + grub_ssize_t actual; + char args[256]; + + if (grub_ieee1275_get_property (grub_ieee1275_chosen, "bootargs", &args, + sizeof args, &actual) == 0 + && actual > 1) + { + int i = 0; + + while (i < actual) + { + char *command = &args[i]; + char *end; + char *val; + + end = grub_strchr (command, ';'); + if (end == 0) + i = actual; /* No more commands after this one. */ + else + { + *end = '\0'; + i += end - command + 1; + while (grub_isspace(args[i])) + i++; + } + + /* Process command. */ + val = grub_strchr (command, '='); + if (val) + { + *val = '\0'; + grub_env_set (command, val + 1); + } + } + } +} + +void +grub_machine_init (void) +{ + grub_ieee1275_init (); + grub_console_init_early (); + grub_heap_init (); + grub_console_init_lately (); + + grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_PARTITION_0); + grub_ofdisk_init (); + + grub_parse_cmdline (); + grub_install_get_time_ms (ieee1275_get_time_ms); +} + +void +grub_machine_fini (void) +{ + grub_ofdisk_fini (); + grub_console_fini (); +} |