123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (c) 2015 Google, Inc
- * Written by Simon Glass <sjg@chromium.org>
- */
- #include <common.h>
- #include <cpu_func.h>
- #include <efi.h>
- #include <errno.h>
- #include <init.h>
- #include <usb.h>
- #include <asm/bootparam.h>
- #include <asm/e820.h>
- #include <asm/post.h>
- DECLARE_GLOBAL_DATA_PTR;
- /*
- * This function looks for the highest region of memory lower than 4GB which
- * has enough space for U-Boot where U-Boot is aligned on a page boundary.
- * It overrides the default implementation found elsewhere which simply
- * picks the end of ram, wherever that may be. The location of the stack,
- * the relocation address, and how far U-Boot is moved by relocation are
- * set in the global data structure.
- */
- ulong board_get_usable_ram_top(ulong total_size)
- {
- struct efi_mem_desc *desc, *end;
- struct efi_entry_memmap *map;
- int ret, size;
- uintptr_t dest_addr = 0;
- struct efi_mem_desc *largest = NULL;
- /*
- * Find largest area of memory below 4GB. We could
- * call efi_build_mem_table() for a more accurate picture since it
- * merges areas together where possible. But that function uses more
- * pre-relocation memory, and it's not critical that we find the
- * absolute largest region.
- */
- ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
- if (ret) {
- /* We should have stopped in dram_init(), something is wrong */
- debug("%s: Missing memory map\n", __func__);
- goto err;
- }
- end = (struct efi_mem_desc *)((ulong)map + size);
- desc = map->desc;
- for (; desc < end; desc = efi_get_next_mem_desc(map, desc)) {
- if (desc->type != EFI_CONVENTIONAL_MEMORY ||
- desc->physical_start >= 1ULL << 32)
- continue;
- if (!largest || desc->num_pages > largest->num_pages)
- largest = desc;
- }
- /* If no suitable area was found, return an error. */
- assert(largest);
- if (!largest || (largest->num_pages << EFI_PAGE_SHIFT) < (2 << 20))
- goto err;
- dest_addr = largest->physical_start + (largest->num_pages <<
- EFI_PAGE_SHIFT);
- return (ulong)dest_addr;
- err:
- panic("No available memory found for relocation");
- return 0;
- }
- int dram_init(void)
- {
- struct efi_mem_desc *desc, *end;
- struct efi_entry_memmap *map;
- int size, ret;
- ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
- if (ret) {
- printf("Cannot find EFI memory map tables, ret=%d\n", ret);
- return -ENODEV;
- }
- end = (struct efi_mem_desc *)((ulong)map + size);
- gd->ram_size = 0;
- desc = map->desc;
- for (; desc < end; desc = efi_get_next_mem_desc(map, desc)) {
- if (desc->type < EFI_MMAP_IO)
- gd->ram_size += desc->num_pages << EFI_PAGE_SHIFT;
- }
- return 0;
- }
- int dram_init_banksize(void)
- {
- struct efi_mem_desc *desc, *end;
- struct efi_entry_memmap *map;
- int ret, size;
- int num_banks;
- ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
- if (ret) {
- /* We should have stopped in dram_init(), something is wrong */
- debug("%s: Missing memory map\n", __func__);
- return -ENXIO;
- }
- end = (struct efi_mem_desc *)((ulong)map + size);
- desc = map->desc;
- for (num_banks = 0;
- desc < end && num_banks < CONFIG_NR_DRAM_BANKS;
- desc = efi_get_next_mem_desc(map, desc)) {
- /*
- * We only use conventional memory and ignore
- * anything less than 1MB.
- */
- if (desc->type != EFI_CONVENTIONAL_MEMORY ||
- (desc->num_pages << EFI_PAGE_SHIFT) < 1 << 20)
- continue;
- gd->bd->bi_dram[num_banks].start = desc->physical_start;
- gd->bd->bi_dram[num_banks].size = desc->num_pages <<
- EFI_PAGE_SHIFT;
- num_banks++;
- }
- return 0;
- }
- int arch_cpu_init(void)
- {
- post_code(POST_CPU_INIT);
- return x86_cpu_init_f();
- }
- int checkcpu(void)
- {
- return 0;
- }
- int print_cpuinfo(void)
- {
- return default_print_cpuinfo();
- }
- /* Find any available tables and copy them to a safe place */
- int reserve_arch(void)
- {
- struct efi_info_hdr *hdr;
- debug("table=%lx\n", gd->arch.table);
- if (!gd->arch.table)
- return 0;
- hdr = (struct efi_info_hdr *)gd->arch.table;
- gd->start_addr_sp -= hdr->total_size;
- memcpy((void *)gd->start_addr_sp, hdr, hdr->total_size);
- debug("Stashing EFI table at %lx to %lx, size %x\n",
- gd->arch.table, gd->start_addr_sp, hdr->total_size);
- gd->arch.table = gd->start_addr_sp;
- return 0;
- }
- int last_stage_init(void)
- {
- /* start usb so that usb keyboard can be used as input device */
- if (CONFIG_IS_ENABLED(USB_KEYBOARD))
- usb_init();
- return 0;
- }
- unsigned int install_e820_map(unsigned int max_entries,
- struct e820_entry *entries)
- {
- struct efi_mem_desc *desc, *end;
- struct efi_entry_memmap *map;
- int size, ret;
- efi_physical_addr_t last_end_addr = 0;
- struct e820_entry *last_entry = NULL;
- __u32 e820_type;
- unsigned int num_entries = 0;
- ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
- if (ret) {
- printf("Cannot find EFI memory map tables, ret=%d\n", ret);
- return -ENODEV;
- }
- end = (struct efi_mem_desc *)((ulong)map + size);
- for (desc = map->desc; desc < end;
- desc = efi_get_next_mem_desc(map, desc)) {
- if (desc->num_pages == 0)
- continue;
- switch (desc->type) {
- case EFI_LOADER_CODE:
- case EFI_LOADER_DATA:
- case EFI_BOOT_SERVICES_CODE:
- case EFI_BOOT_SERVICES_DATA:
- case EFI_CONVENTIONAL_MEMORY:
- e820_type = E820_RAM;
- break;
- case EFI_RESERVED_MEMORY_TYPE:
- case EFI_RUNTIME_SERVICES_CODE:
- case EFI_RUNTIME_SERVICES_DATA:
- case EFI_MMAP_IO:
- case EFI_MMAP_IO_PORT:
- case EFI_PAL_CODE:
- e820_type = E820_RESERVED;
- break;
- case EFI_ACPI_RECLAIM_MEMORY:
- e820_type = E820_ACPI;
- break;
- case EFI_ACPI_MEMORY_NVS:
- e820_type = E820_NVS;
- break;
- case EFI_UNUSABLE_MEMORY:
- e820_type = E820_UNUSABLE;
- break;
- default:
- printf("Invalid EFI memory descriptor type (0x%x)!\n",
- desc->type);
- continue;
- }
- if (last_entry != NULL && last_entry->type == e820_type &&
- desc->physical_start == last_end_addr) {
- last_entry->size += (desc->num_pages << EFI_PAGE_SHIFT);
- last_end_addr += (desc->num_pages << EFI_PAGE_SHIFT);
- } else {
- if (num_entries >= E820MAX)
- break;
- entries[num_entries].addr = desc->physical_start;
- entries[num_entries].size = desc->num_pages;
- entries[num_entries].size <<= EFI_PAGE_SHIFT;
- entries[num_entries].type = e820_type;
- last_entry = &entries[num_entries];
- last_end_addr = last_entry->addr + last_entry->size;
- num_entries++;
- }
- }
- return num_entries;
- }
- void setup_efi_info(struct efi_info *efi_info)
- {
- struct efi_entry_systable *table;
- struct efi_entry_memmap *map;
- char *signature;
- int size, ret;
- memset(efi_info, 0, sizeof(struct efi_info));
- ret = efi_info_get(EFIET_SYS_TABLE, (void **)&table, &size);
- if (ret) {
- printf("Cannot find EFI system table, ret=%d\n", ret);
- return;
- }
- efi_info->efi_systab = (u32)(table->sys_table);
- ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
- if (ret) {
- printf("Cannot find EFI memory map tables, ret=%d\n", ret);
- return;
- }
- efi_info->efi_memdesc_size = map->desc_size;
- efi_info->efi_memdesc_version = map->version;
- efi_info->efi_memmap = (u32)(map->desc);
- efi_info->efi_memmap_size = size - sizeof(struct efi_entry_memmap);
- #ifdef CONFIG_EFI_STUB_64BIT
- efi_info->efi_systab_hi = table->sys_table >> 32;
- efi_info->efi_memmap_hi = (u64)(u32)(map->desc) >> 32;
- signature = EFI64_LOADER_SIGNATURE;
- #else
- signature = EFI32_LOADER_SIGNATURE;
- #endif
- memcpy(&efi_info->efi_loader_signature, signature, 4);
- }
|