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/* 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);
}
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