diff options
Diffstat (limited to 'grub-core/kern/sparc64/ieee1275/ieee1275.c')
| -rw-r--r-- | grub-core/kern/sparc64/ieee1275/ieee1275.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/grub-core/kern/sparc64/ieee1275/ieee1275.c b/grub-core/kern/sparc64/ieee1275/ieee1275.c new file mode 100644 index 0000000..5a59aaf --- /dev/null +++ b/grub-core/kern/sparc64/ieee1275/ieee1275.c @@ -0,0 +1,147 @@ +/* + * 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; +} + +grub_uint64_t +grub_ieee1275_num_blocks (grub_ieee1275_ihandle_t ihandle) +{ + struct nblocks_args_ieee1275 + { + struct grub_ieee1275_common_hdr common; + grub_ieee1275_cell_t method; + grub_ieee1275_cell_t ihandle; + grub_ieee1275_cell_t catch_result; + grub_ieee1275_cell_t blocks; + } + args; + + INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 2); + args.method = (grub_ieee1275_cell_t) "#blocks"; + args.ihandle = ihandle; + args.catch_result = 1; + + if ((IEEE1275_CALL_ENTRY_FN (&args) == -1) || (args.catch_result != 0)) + return -1; + + /* + * If the number of blocks exceeds the range of an unsigned number, + * return 0 to alert the caller to try the #blocks64 command. + */ + if (args.blocks >= 0xffffffffULL) + return 0; + + return args.blocks; +} + +grub_uint64_t +grub_ieee1275_num_blocks64 (grub_ieee1275_ihandle_t ihandle) +{ + struct nblocks_args_ieee1275 + { + struct grub_ieee1275_common_hdr common; + grub_ieee1275_cell_t method; + grub_ieee1275_cell_t ihandle; + grub_ieee1275_cell_t catch_result; + grub_ieee1275_cell_t hi_blocks; + grub_ieee1275_cell_t lo_blocks; + } + args; + + INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 3); + args.method = (grub_ieee1275_cell_t) "#blocks64"; + args.ihandle = ihandle; + args.catch_result = 1; + + if ((IEEE1275_CALL_ENTRY_FN (&args) == -1) || (args.catch_result != 0)) + return -1; + + return ((args.hi_blocks << 32) | (args.lo_blocks)); +} |