| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/iomap.h> |
| #include <amdblocks/memmap.h> |
| #include <amdblocks/root_complex.h> |
| #include <arch/vga.h> |
| #include <cbmem.h> |
| #include <device/device.h> |
| #include <stdint.h> |
| |
| /* |
| * +--------------------------------+ |
| * | | |
| * | | |
| * | | |
| * | | |
| * | | |
| * | | |
| * | | |
| * reserved_dram_end +--------------------------------+ |
| * | | |
| * | verstage (if reqd) | |
| * | (VERSTAGE_SIZE) | |
| * +--------------------------------+ VERSTAGE_ADDR |
| * | | |
| * | FSP-M | |
| * | (FSP_M_SIZE) | |
| * +--------------------------------+ FSP_M_ADDR |
| * | romstage | |
| * | (ROMSTAGE_SIZE) | |
| * +--------------------------------+ ROMSTAGE_ADDR = BOOTBLOCK_END |
| * | | X86_RESET_VECTOR = BOOTBLOCK_END - 0x10 |
| * | bootblock | |
| * | (C_ENV_BOOTBLOCK_SIZE) | |
| * +--------------------------------+ BOOTBLOCK_ADDR = BOOTBLOCK_END - C_ENV_BOOTBLOCK_SIZE |
| * | Unused hole | |
| * | (30KiB) | |
| * +--------------------------------+ |
| * | FMAP cache (FMAP_SIZE) | |
| * +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE + 0x200 |
| * | Early Timestamp region (512B) | |
| * +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE |
| * | Preram CBMEM console | |
| * | (PRERAM_CBMEM_CONSOLE_SIZE) | |
| * +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE |
| * | PSP shared (vboot workbuf) | |
| * | (PSP_SHAREDMEM_SIZE) | |
| * +--------------------------------+ PSP_SHAREDMEM_BASE |
| * | APOB (120KiB) | |
| * +--------------------------------+ PSP_APOB_DRAM_ADDRESS |
| * | Early BSP stack | |
| * | (EARLYRAM_BSP_STACK_SIZE) | |
| * reserved_dram_start +--------------------------------+ EARLY_RESERVED_DRAM_BASE |
| * | DRAM | |
| * +--------------------------------+ 0x100000 |
| * | Option ROM | |
| * +--------------------------------+ 0xc0000 |
| * | Legacy VGA | |
| * +--------------------------------+ 0xa0000 |
| * | DRAM | |
| * +--------------------------------+ 0x0 |
| */ |
| void read_soc_memmap_resources(struct device *dev, unsigned long *idx) |
| { |
| uint32_t mem_usable = (uintptr_t)cbmem_top(); |
| |
| uintptr_t early_reserved_dram_start, early_reserved_dram_end; |
| const struct memmap_early_dram *e = memmap_get_early_dram_usage(); |
| |
| early_reserved_dram_start = e->base; |
| early_reserved_dram_end = e->base + e->size; |
| |
| /* 0x0 - 0x9ffff */ |
| ram_range(dev, (*idx)++, 0, 0xa0000); |
| |
| /* 0xa0000 - 0xbffff: legacy VGA */ |
| mmio_range(dev, (*idx)++, VGA_MMIO_BASE, VGA_MMIO_SIZE); |
| |
| /* 0xc0000 - 0xfffff: Option ROM */ |
| reserved_ram_from_to(dev, (*idx)++, 0xc0000, 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); |
| |
| /* Reserve fixed IOMMU MMIO region */ |
| mmio_range(dev, (*idx)++, IOMMU_RESERVED_MMIO_BASE, IOMMU_RESERVED_MMIO_SIZE); |
| |
| read_fsp_resources(dev, idx); |
| } |