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/* SPDX-License-Identifier: GPL-2.0-only */
/* CACHE_ROM_SIZE defined here. */
#include <cpu/x86/mtrr.h>
#include <memlayout.h>
/* This file is included inside a SECTIONS block */
. = CONFIG_DCACHE_RAM_BASE;
.car.data . (NOLOAD) : {
_car_region_start = . ;
. += CONFIG_FSP_M_RC_HEAP_SIZE;
#if CONFIG(PAGING_IN_CACHE_AS_RAM)
/* Page table pre-allocation. CONFIG_DCACHE_RAM_BASE should be 4KiB
* aligned when using this option. */
REGION(pagetables, ., 4K * CONFIG_NUM_CAR_PAGE_TABLE_PAGES, 4K)
#endif
#if CONFIG(VBOOT_STARTS_IN_BOOTBLOCK)
/* Vboot work buffer only needs to be available when verified boot
* starts in bootblock. */
VBOOT2_WORK(., 12K)
#endif
#if CONFIG(TPM_MEASURED_BOOT)
/* Vboot measured boot TCPA log measurements.
* Needs to be transferred until CBMEM is available */
TPM_TCPA_LOG(., 2K)
#endif
/* Stack for CAR stages. Since it persists across all stages that
* use CAR it can be reused. The chipset/SoC is expected to provide
* the stack size. */
REGION(car_stack, ., CONFIG_DCACHE_BSP_STACK_SIZE, 4)
/* The pre-ram cbmem console as well as the timestamp region are fixed
* in size. Therefore place them above the car global section so that
* multiple stages (romstage and verstage) have a consistent
* link address of these shared objects. */
PRERAM_CBMEM_CONSOLE(., CONFIG_PRERAM_CBMEM_CONSOLE_SIZE)
#if CONFIG(PAGING_IN_CACHE_AS_RAM)
. = ALIGN(32);
/* Page directory pointer table resides here. There are 4 8-byte entries
* totalling 32 bytes that need to be 32-byte aligned. The reason the
* pdpt are not colocated with the rest of the page tables is to reduce
* fragmentation of the CAR space that persists across stages. */
REGION(pdpt, ., 32, 32)
#endif
TIMESTAMP(., 0x200)
#if !CONFIG(NO_CBFS_MCACHE)
CBFS_MCACHE(., CONFIG_CBFS_MCACHE_SIZE)
#endif
#if !CONFIG(NO_FMAP_CACHE)
FMAP_CACHE(., FMAP_SIZE)
#endif
/* Reserve sizeof(struct ehci_dbg_info). */
REGION(car_ehci_dbg_info, ., 80, 1)
/* _bss and _ebss provide symbols to per-stage
* variables that are not shared like the timestamp and the pre-ram
* cbmem console. This is useful for clearing this area on a per-stage
* basis when more than one stage uses cache-as-ram. */
#if ENV_SEPARATE_BSS
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
_bss = .;
/* Allow global uninitialized variables for stages without CAR teardown. */
*(.bss)
*(.bss.*)
*(.sbss)
*(.sbss.*)
/* '*_E' GNAT generated global variables actually are un-initialized
* (filled with zeros) variables which are initialized at
* runtime. Therefore, they can be placed in the _bss region. */
#if CONFIG(ROMSTAGE_LIBHWBASE)
*(.data.hw__*_E)
#endif
. = ALIGN(ARCH_POINTER_ALIGN_SIZE);
_ebss = .;
RECORD_SIZE(bss)
#endif
#if ENV_ROMSTAGE && CONFIG(ASAN_IN_ROMSTAGE)
_shadow_size = (_ebss - _car_region_start) >> 3;
REGION(asan_shadow, ., _shadow_size, ARCH_POINTER_ALIGN_SIZE)
#endif
_car_unallocated_start = .;
_car_region_end = . + CONFIG_DCACHE_RAM_SIZE - (. - _car_region_start)
- CONFIG_FSP_T_RESERVED_SIZE;
}
. = _car_region_start;
.car.fspm_rc_heap . (NOLOAD) : {
. += CONFIG_FSP_M_RC_HEAP_SIZE;
}
. = _car_region_end;
.car.mrc_var . (NOLOAD) : {
. += CONFIG_DCACHE_RAM_MRC_VAR_SIZE;
}
.car.fspt_reserved . (NOLOAD) : {
. += CONFIG_FSP_T_RESERVED_SIZE;
}
#if ENV_BOOTBLOCK
_car_mtrr_end = .;
_car_mtrr_start = _car_region_start;
_car_mtrr_size = _car_mtrr_end - _car_mtrr_start;
_car_mtrr_sz_log2 = 1 << LOG2CEIL(_car_mtrr_size);
_car_mtrr_mask = ~(MAX(4096, _car_mtrr_sz_log2) - 1);
#if !CONFIG(NO_XIP_EARLY_STAGES)
_xip_program_sz_log2 = 1 << LOG2CEIL(_ebootblock - _bootblock);
_xip_mtrr_mask = ~(MAX(4096, _xip_program_sz_log2) - 1);
#endif
_rom_mtrr_mask = ~(CACHE_ROM_SIZE - 1);
_rom_mtrr_base = _rom_mtrr_mask;
#endif
/* Global variables are not allowed in romstage
* This section is checked during stage creation to ensure
* that there are no global variables present
*/
. = 0xffffff00;
.illegal_globals . : {
*(.data)
*(.data.*)
}
_bogus = ASSERT((CONFIG_DCACHE_RAM_SIZE == 0) || (SIZEOF(.car.data) <= CONFIG_DCACHE_RAM_SIZE), "Cache as RAM area is too full");
#if CONFIG(PAGING_IN_CACHE_AS_RAM)
_bogus2 = ASSERT(_pagetables == ALIGN(_pagetables, 4096), "_pagetables aren't 4KiB aligned");
#endif
_bogus3 = ASSERT(CONFIG_DCACHE_BSP_STACK_SIZE > 0x0, "BSP stack size not configured");
#if CONFIG(NO_XIP_EARLY_STAGES) && (ENV_ROMSTAGE || ENV_VERSTAGE)
_bogus4 = ASSERT(_eprogram <= _car_region_end, "Stage end too high !");
_bogus5 = ASSERT(_program >= _car_unallocated_start, "Stage start too low!");
#endif
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