src/soc/amd/glinda/memmap.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <amdblocks/iomap.h>
   4 #include <amdblocks/memmap.h>
   5 #include <amdblocks/root_complex.h>
   6 #include <device/device.h>
   7 #include <stdint.h>
   8
   9 /*
  10  *                     +--------------------------------+
  11  *                     |                                |
  12  *                     |                                |
  13  *                     |                                |
  14  *                     |                                |
  15  *                     |                                |
  16  *                     |                                |
  17  *                     |                                |
  18  *   reserved_dram_end +--------------------------------+
  19  *                     |                                |
  20  *                     |       verstage (if reqd)       |
  21  *                     |          (VERSTAGE_SIZE)       |
  22  *                     +--------------------------------+ VERSTAGE_ADDR
  23  *                     |                                |
  24  *                     |            FSP-M               |
  25  *                     |         (FSP_M_SIZE)           |
  26  *                     +--------------------------------+ FSP_M_ADDR
  27  *                     |           romstage             |
  28  *                     |        (ROMSTAGE_SIZE)         |
  29  *                     +--------------------------------+ ROMSTAGE_ADDR = BOOTBLOCK_END
  30  *                     |                                | X86_RESET_VECTOR = BOOTBLOCK_END  - 0x10
  31  *                     |           bootblock            |
  32  *                     |     (C_ENV_BOOTBLOCK_SIZE)     |
  33  *                     +--------------------------------+ BOOTBLOCK_ADDR = BOOTBLOCK_END - C_ENV_BOOTBLOCK_SIZE
  34  *                     |          Unused hole           |
  35  *                     |            (30KiB)             |
  36  *                     +--------------------------------+
  37  *                     |     FMAP cache (FMAP_SIZE)     |
  38  *                     +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE + 0x200
  39  *                     |  Early Timestamp region (512B) |
  40  *                     +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE
  41  *                     |      Preram CBMEM console      |
  42  *                     |   (PRERAM_CBMEM_CONSOLE_SIZE)  |
  43  *                     +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE
  44  *                     |   PSP shared (vboot workbuf)   |
  45  *                     |      (PSP_SHAREDMEM_SIZE)      |
  46  *                     +--------------------------------+ PSP_SHAREDMEM_BASE
  47  *                     |          APOB (120KiB)         |
  48  *                     +--------------------------------+ PSP_APOB_DRAM_ADDRESS
  49  *                     |        Early BSP stack         |
  50  *                     |   (EARLYRAM_BSP_STACK_SIZE)    |
  51  * reserved_dram_start +--------------------------------+ EARLY_RESERVED_DRAM_BASE
  52  *                     |              DRAM              |
  53  *                     +--------------------------------+ 0x100000
  54  *                     |           Option ROM           |
  55  *                     +--------------------------------+ 0xc0000
  56  *                     |           Legacy VGA           |
  57  *                     +--------------------------------+ 0xa0000
  58  *                     |              DRAM              |
  59  *                     +--------------------------------+ 0x0
  60  */
  61 void read_soc_memmap_resources(struct device *dev, unsigned long *idx)
  62 {
  63         read_lower_soc_memmap_resources(dev, idx);
  64
  65         /* Reserve fixed IOMMU MMIO region */
  66         mmio_range(dev, (*idx)++, IOMMU_RESERVED_MMIO_BASE, IOMMU_RESERVED_MMIO_SIZE);
  67
  68         read_fsp_resources(dev, idx);
  69 }