| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/memmap.h> |
| #include <amdblocks/smm.h> |
| #include <arch/vga.h> |
| #include <console/console.h> |
| #include <cbmem.h> |
| #include <cpu/x86/smm.h> |
| #include <device/device.h> |
| #include <memrange.h> |
| #include <types.h> |
| |
| void memmap_stash_early_dram_usage(void) |
| { |
| struct memmap_early_dram *e; |
| |
| e = cbmem_add(CBMEM_ID_CB_EARLY_DRAM, sizeof(*e)); |
| |
| if (!e) |
| die("ERROR: Failed to stash early dram usage!\n"); |
| |
| e->base = (uint32_t)(uintptr_t)_early_reserved_dram; |
| e->size = REGION_SIZE(early_reserved_dram); |
| } |
| |
| static const struct memmap_early_dram *memmap_get_early_dram_usage(void) |
| { |
| struct memmap_early_dram *e = cbmem_find(CBMEM_ID_CB_EARLY_DRAM); |
| |
| if (!e) |
| die("ERROR: Failed to read early dram usage!\n"); |
| |
| return e; |
| } |
| |
| /* report SoC memory map up to cbmem_top */ |
| void read_lower_soc_memmap_resources(struct device *dev, unsigned long *idx) |
| { |
| const uint32_t mem_usable = (uintptr_t)cbmem_top(); |
| const struct memmap_early_dram *e = memmap_get_early_dram_usage(); |
| const uintptr_t early_reserved_dram_start = e->base; |
| const uintptr_t early_reserved_dram_end = e->base + e->size; |
| |
| /* 0x0 - 0x9ffff */ |
| ram_range(dev, (*idx)++, 0, VGA_MMIO_BASE); |
| |
| /* 0xa0000 - 0xbffff: legacy VGA */ |
| mmio_range(dev, (*idx)++, VGA_MMIO_BASE, VGA_MMIO_SIZE); |
| |
| /* 0xc0000 - 0xfffff: Option ROM */ |
| reserved_ram_from_to(dev, (*idx)++, VGA_MMIO_BASE + VGA_MMIO_SIZE, 1 * MiB); |
| |
| /* 1MiB - bottom of DRAM reserved for early coreboot usage */ |
| ram_from_to(dev, (*idx)++, 1 * MiB, early_reserved_dram_start); |
| |
| /* DRAM reserved for early coreboot usage */ |
| reserved_ram_from_to(dev, (*idx)++, early_reserved_dram_start, early_reserved_dram_end); |
| |
| /* |
| * top of DRAM consumed early - low top usable RAM |
| * cbmem_top() accounts for low UMA and TSEG if they are used. |
| */ |
| ram_from_to(dev, (*idx)++, early_reserved_dram_end, mem_usable); |
| } |
| |
| void smm_region(uintptr_t *start, size_t *size) |
| { |
| static int once; |
| |
| if (CONFIG(PLATFORM_USES_FSP2_0)) { |
| fsp_get_smm_region(start, size); |
| } else { |
| *start = (uintptr_t)cbmem_top(); |
| *size = CONFIG_SMM_TSEG_SIZE; |
| } |
| |
| if (!once) { |
| clear_tvalid(); |
| once = 1; |
| } |
| } |