Change in ...coreboot[master]: symbols.h: Add macro to define memlayout region symbols - coreboot-gerrit

21 Feb 2019

Julius Werner has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/31539
Change subject: symbols.h: Add macro to define memlayout region symbols
......................................................................
symbols.h: Add macro to define memlayout region symbols
When <symbols.h> was first introduced, it only declared a handful of
regions and we didn't expect that too many architectures and platforms
would need to add their own later. However, our amount of platforms has
greatly expanded since, and with them the need for more special memory
regions. The amount of code duplication is starting to get unsightly,
and platforms keep defining their own <soc/symbols.h> files that need
this as well.
This patch adds another macro to cut down the definition boilerplate.
Unfortunately, macros cannot define other macros when they're called, so
referring to region sizes as _name_size doesn't work anymore. This patch
replaces the scheme with REGION_SIZE(name).
Not touching the regions in the x86-specific <arch/symbols.h> yet since
they don't follow the standard _region/_eregion naming scheme. They can
be converted later if desired.
Change-Id: I44727d77d1de75882c72a94f29bd7e2c27741dd8
Signed-off-by: Julius Werner jwerner@chromium.org
---
M src/arch/arm/tables.c
M src/arch/arm64/tables.c
M src/arch/mips/cache.c
M src/arch/x86/acpi_s3.c
M src/cpu/x86/pae/pgtbl.c
M src/drivers/intel/fsp2_0/memory_init.c
M src/drivers/spi/cbfs_spi.c
M src/include/symbols.h
M src/lib/bootblock.c
M src/lib/bootmem.c
M src/lib/cbmem_common.c
M src/lib/cbmem_console.c
M src/lib/stack.c
M src/lib/timestamp.c
M src/mainboard/google/daisy/mainboard.c
M src/mainboard/google/gale/mainboard.c
M src/mainboard/google/gale/mmu.c
M src/mainboard/google/gru/romstage.c
M src/mainboard/google/nyan/mainboard.c
M src/mainboard/google/nyan/romstage.c
M src/mainboard/google/nyan_big/mainboard.c
M src/mainboard/google/nyan_big/romstage.c
M src/mainboard/google/nyan_blaze/mainboard.c
M src/mainboard/google/nyan_blaze/romstage.c
M src/mainboard/google/peach_pit/mainboard.c
M src/mainboard/google/storm/mainboard.c
M src/mainboard/google/storm/mmu.c
M src/mainboard/google/urara/mainboard.c
M src/mainboard/google/veyron/mainboard.c
M src/mainboard/google/veyron/romstage.c
M src/mainboard/google/veyron_mickey/mainboard.c
M src/mainboard/google/veyron_mickey/romstage.c
M src/mainboard/google/veyron_rialto/mainboard.c
M src/mainboard/google/veyron_rialto/romstage.c
M src/security/vboot/common.c
M src/security/vboot/symbols.h
M src/soc/cavium/cn81xx/cpu.c
M src/soc/cavium/cn81xx/include/soc/cpu.h
M src/soc/cavium/cn81xx/mmu.c
M src/soc/cavium/common/bootblock.c
M src/soc/imgtec/pistachio/bootblock.c
M src/soc/mediatek/common/include/soc/mmu_operations.h
M src/soc/mediatek/common/mmu_operations.c
M src/soc/mediatek/mt8173/flash_controller.c
M src/soc/mediatek/mt8173/include/soc/symbols.h
M src/soc/mediatek/mt8173/mmu_operations.c
M src/soc/nvidia/tegra124/verstage.c
M src/soc/nvidia/tegra210/mmu_operations.c
M src/soc/qualcomm/sdm845/include/soc/symbols.h
M src/soc/qualcomm/sdm845/mmu.c
M src/soc/qualcomm/sdm845/soc.c
M src/soc/rockchip/rk3288/bootblock.c
M src/soc/rockchip/rk3288/soc.c
M src/soc/rockchip/rk3399/decompressor.c
M src/soc/rockchip/rk3399/include/soc/symbols.h
M src/soc/rockchip/rk3399/soc.c
M src/soc/samsung/exynos5250/alternate_cbfs.c
M src/soc/samsung/exynos5250/spi.c
M src/soc/samsung/exynos5420/alternate_cbfs.c
M src/soc/samsung/exynos5420/spi.c
M src/vendorcode/google/chromeos/symbols.h
M src/vendorcode/google/chromeos/watchdog.c
62 files changed, 146 insertions(+), 207 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/39/31539/1

diff --git a/src/arch/arm/tables.c b/src/arch/arm/tables.c
index 682c2bc..7f8e2a0 100644
--- a/src/arch/arm/tables.c
+++ b/src/arch/arm/tables.c
@@ -28,14 +28,14 @@
 {
    DECLARE_OPTIONAL_REGION(ttb_subtables);
-	bootmem_add_range((uintptr_t)_ttb, _ttb_size, BM_MEM_RAMSTAGE);
-	bootmem_add_range((uintptr_t)_ttb_subtables, _ttb_subtables_size,
+	bootmem_add_range((uintptr_t)_ttb, REGION_SIZE(ttb), BM_MEM_RAMSTAGE);
+	bootmem_add_range((uintptr_t)_ttb_subtables, REGION_SIZE(ttb_subtables),
    		  BM_MEM_RAMSTAGE);
if (!IS_ENABLED(CONFIG_COMMON_CBFS_SPI_WRAPPER))
    	return;
    bootmem_add_range((uintptr_t)_postram_cbfs_cache,
-			  _postram_cbfs_cache_size, BM_MEM_RAMSTAGE);
+			  REGION_SIZE(postram_cbfs_cache), BM_MEM_RAMSTAGE);
 }
void lb_arch_add_records(struct lb_header *header)
diff --git a/src/arch/arm64/tables.c b/src/arch/arm64/tables.c
index ec949fd..b0010c4 100644
--- a/src/arch/arm64/tables.c
+++ b/src/arch/arm64/tables.c
@@ -28,15 +28,17 @@
void bootmem_arch_add_ranges(void)
 {
-	bootmem_add_range((uintptr_t)_ttb, _ttb_size, BM_MEM_RAMSTAGE);
+	bootmem_add_range((uintptr_t)_ttb, REGION_SIZE(ttb), BM_MEM_RAMSTAGE);
-	if (IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE) && _bl31_size > 0)
-		bootmem_add_range((uintptr_t)_bl31, _bl31_size, BM_MEM_BL31);
+	if (IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE) &&
+	    REGION_SIZE(bl31) > 0)
+		bootmem_add_range((uintptr_t)_bl31, REGION_SIZE(bl31),
+				  BM_MEM_BL31);
if (!IS_ENABLED(CONFIG_COMMON_CBFS_SPI_WRAPPER))
    	return;
    bootmem_add_range((uintptr_t)_postram_cbfs_cache,
-			  _postram_cbfs_cache_size, BM_MEM_RAMSTAGE);
+			  REGION_SIZE(postram_cbfs_cache), BM_MEM_RAMSTAGE);
 }
void lb_arch_add_records(struct lb_header *header)
diff --git a/src/arch/mips/cache.c b/src/arch/mips/cache.c
index e17075c..62c20f3 100644
--- a/src/arch/mips/cache.c
+++ b/src/arch/mips/cache.c
@@ -111,5 +111,6 @@
 {
    cache_invalidate_all(start, size);
    if (flags & SEG_FINAL)
-		cache_invalidate_all((uintptr_t)_cbfs_cache, _cbfs_cache_size);
+		cache_invalidate_all((uintptr_t)_cbfs_cache,
+				     REGION_SIZE(cbfs_cache));
 }
diff --git a/src/arch/x86/acpi_s3.c b/src/arch/x86/acpi_s3.c
index b5a9498..e455b45 100644
--- a/src/arch/x86/acpi_s3.c
+++ b/src/arch/x86/acpi_s3.c
@@ -172,7 +172,8 @@
    if (IS_ENABLED(CONFIG_RELOCATABLE_RAMSTAGE))
    	return;
-	backup_create_or_update(NULL, (uintptr_t)_program, _program_size);
+	backup_create_or_update(NULL, (uintptr_t)_program,
+				REGION_SIZE(program));
 }
#define WAKEUP_BASE 0x600
diff --git a/src/cpu/x86/pae/pgtbl.c b/src/cpu/x86/pae/pgtbl.c
index 278d50f..062ee40 100644
--- a/src/cpu/x86/pae/pgtbl.c
+++ b/src/cpu/x86/pae/pgtbl.c
@@ -239,12 +239,12 @@
    if (!ENV_CACHE_AS_RAM)
    	return -1;
-	if (read_from_cbfs(pdpt_name, _pdpt, _pdpt_size)) {
+	if (read_from_cbfs(pdpt_name, _pdpt, REGION_SIZE(pdpt))) {
    	printk(BIOS_ERR, "Couldn't load pdpt\n");
    	return -1;
    }
-	if (read_from_cbfs(pt_name, _pagetables, _pagetables_size)) {
+	if (read_from_cbfs(pt_name, _pagetables, REGION_SIZE(pagetables))) {
    	printk(BIOS_ERR, "Couldn't load page tables\n");
    	return -1;
    }
diff --git a/src/drivers/intel/fsp2_0/memory_init.c b/src/drivers/intel/fsp2_0/memory_init.c
index bb64cd5..1eeede5 100644
--- a/src/drivers/intel/fsp2_0/memory_init.c
+++ b/src/drivers/intel/fsp2_0/memory_init.c
@@ -398,7 +398,7 @@
    memranges_init_empty(&memmap, &freeranges[0], ARRAY_SIZE(freeranges));
    memranges_insert(&memmap, (uintptr_t)_car_region_start,
    	_car_relocatable_data_end - _car_region_start, 0);
-	memranges_insert(&memmap, (uintptr_t)_program, _program_size, 0);
+	memranges_insert(&memmap, (uintptr_t)_program, REGION_SIZE(program), 0);
if (!IS_ENABLED(CONFIG_FSP_M_XIP))
    	status = load_fspm_mem(&hdr, &file_data, &memmap);
diff --git a/src/drivers/spi/cbfs_spi.c b/src/drivers/spi/cbfs_spi.c
index 3e5f2af..e311752 100644
--- a/src/drivers/spi/cbfs_spi.c
+++ b/src/drivers/spi/cbfs_spi.c
@@ -105,7 +105,7 @@
    boot_device_init();
    if (_preram_cbfs_cache != _postram_cbfs_cache)
    	mmap_helper_device_init(&mdev, _postram_cbfs_cache,
-					_postram_cbfs_cache_size);
+					REGION_SIZE(postram_cbfs_cache));
 }
 ROMSTAGE_CBMEM_INIT_HOOK(switch_to_postram_cache);
@@ -122,7 +122,7 @@
spi_flash_init_done = true;
-	mmap_helper_device_init(&mdev, _cbfs_cache, _cbfs_cache_size);
+	mmap_helper_device_init(&mdev, _cbfs_cache, REGION_SIZE(cbfs_cache));
 }
/* Return the CBFS boot device. */
diff --git a/src/include/symbols.h b/src/include/symbols.h
index abb9fbe..4efb14d 100644
--- a/src/include/symbols.h
+++ b/src/include/symbols.h
@@ -18,105 +18,41 @@
#include <types.h>
-extern u8 _sram[];
-extern u8 _esram[];
-#define _sram_size (_esram - _sram)
-
 extern u8 _dram[];
-extern u8 _timestamp[];
-extern u8 _etimestamp[];
-#define _timestamp_size	(_etimestamp - _timestamp)
+#define REGION_SIZE(name) (_e##name - _##name)
-extern u8 _preram_cbmem_console[];
-extern u8 _epreram_cbmem_console[];
-#define _preram_cbmem_console_size \
-		(_epreram_cbmem_console - _preram_cbmem_console)
+#define DECLARE_REGION(name)	\
+	extern u8 _##name[];	\
+	extern u8 _e##name[];
-extern u8 _cbmem_init_hooks[];
-extern u8 _ecbmem_init_hooks[];
-#define _cbmem_init_hooks_size (_ecbmem_init_hooks - _cbmem_init_hooks)
-
-extern u8 _stack[];
-extern u8 _estack[];
-#define _stack_size (_estack - _stack)
-
-extern u8 _pagetables[];
-extern u8 _epagetables[];
-#define _pagetables_size (_epagetables - _pagetables)
-
-extern u8 _preram_cbfs_cache[];
-extern u8 _epreram_cbfs_cache[];
-#define _preram_cbfs_cache_size (_epreram_cbfs_cache - _preram_cbfs_cache)
-
-extern u8 _postram_cbfs_cache[];
-extern u8 _epostram_cbfs_cache[];
-#define _postram_cbfs_cache_size (_epostram_cbfs_cache - _postram_cbfs_cache)
-
-extern u8 _cbfs_cache[];
-extern u8 _ecbfs_cache[];
-#define _cbfs_cache_size (_ecbfs_cache - _cbfs_cache)
-
-extern u8 _payload[];
-extern u8 _epayload[];
-#define _payload_size (_epayload - _payload)
-
-/* "program" always refers to the current execution unit. */
-extern u8 _program[];
-extern u8 _eprogram[];
-#define _program_size (_eprogram - _program)
-
-/* _<stage>_size is always the maximum amount allocated in memlayout, whereas
- * _program_size gives the actual memory footprint *used* by current stage. */
-extern u8 _decompressor[];
-extern u8 _edecompressor[];
-#define _decompressor_size (_edecompressor - _decompressor)
-
-extern u8 _bootblock[];
-extern u8 _ebootblock[];
-#define _bootblock_size (_ebootblock - _bootblock)
-
-extern u8 _romstage[];
-extern u8 _eromstage[];
-#define _romstage_size (_eromstage - _romstage)
-
-extern u8 _ramstage[];
-extern u8 _eramstage[];
-#define _ramstage_size (_eramstage - _ramstage)
-
-extern u8 _verstage[];
-extern u8 _everstage[];
-#define _verstage_size (_everstage - _verstage)
+DECLARE_REGION(sram)
+DECLARE_REGION(timestamp)
+DECLARE_REGION(preram_cbmem_console)
+DECLARE_REGION(cbmem_init_hooks)
+DECLARE_REGION(stack)
+DECLARE_REGION(preram_cbfs_cache)
+DECLARE_REGION(postram_cbfs_cache)
+DECLARE_REGION(cbfs_cache)
+DECLARE_REGION(payload)
+DECLARE_REGION(program)
+DECLARE_REGION(decompressor)
+DECLARE_REGION(bootblock)
+DECLARE_REGION(verstage)
+DECLARE_REGION(romstage)
+DECLARE_REGION(postcar)
+DECLARE_REGION(ramstage)
/* Arch-specific, move to <arch/symbols.h> if they become too many. */
-extern u8 _ttb[];
-extern u8 _ettb[];
-#define _ttb_size (_ettb - _ttb)
-
-extern u8 _ttb_subtables[];
-extern u8 _ettb_subtables[];
-#define _ttb_subtables_size (_ettb_subtables - _ttb_subtables)
-
-extern u8 _dma_coherent[];
-extern u8 _edma_coherent[];
-#define _dma_coherent_size (_edma_coherent - _dma_coherent)
-
-extern u8 _soc_registers[];
-extern u8 _esoc_registers[];
-#define _soc_registers_size (_esoc_registers - _soc_registers)
-
-extern u8 _framebuffer[];
-extern u8 _eframebuffer[];
-#define _framebuffer_size (_eframebuffer - _framebuffer)
-
-extern u8 _pdpt[];
-extern u8 _epdpt[];
-#define _pdpt_size (_epdpt - _pdpt)
-
-extern u8 _bl31[];
-extern u8 _ebl31[];
-#define _bl31_size (_ebl31 - _bl31)
+DECLARE_REGION(pagetables)
+DECLARE_REGION(ttb)
+DECLARE_REGION(ttb_subtables)
+DECLARE_REGION(dma_coherent)
+DECLARE_REGION(soc_registers)
+DECLARE_REGION(framebuffer)
+DECLARE_REGION(pdpt)
+DECLARE_REGION(bl31)
/* Put this into a .c file accessing a linker script region to mark that region
  * as "optional". If it is defined in memlayout.ld (or anywhere else), the
diff --git a/src/lib/bootblock.c b/src/lib/bootblock.c
index f2ada52..037e913 100644
--- a/src/lib/bootblock.c
+++ b/src/lib/bootblock.c
@@ -33,7 +33,8 @@
    struct timestamp_entry *timestamps, size_t num_timestamps)
 {
    /* Initialize timestamps if we have TIMESTAMP region in memlayout.ld. */
-	if (IS_ENABLED(CONFIG_COLLECT_TIMESTAMPS) && _timestamp_size > 0) {
+	if (IS_ENABLED(CONFIG_COLLECT_TIMESTAMPS) &&
+	    REGION_SIZE(timestamp) > 0) {
    	int i;
    	timestamp_init(base_timestamp);
    	for (i = 0; i < num_timestamps; i++)
diff --git a/src/lib/bootmem.c b/src/lib/bootmem.c
index 7cc8fff..01ad3e8 100644
--- a/src/lib/bootmem.c
+++ b/src/lib/bootmem.c
@@ -89,8 +89,10 @@
    /* Add memory used by CBMEM. */
    cbmem_add_bootmem();
-	bootmem_add_range((uintptr_t)_stack, _stack_size, BM_MEM_RAMSTAGE);
-	bootmem_add_range((uintptr_t)_program, _program_size, BM_MEM_RAMSTAGE);
+	bootmem_add_range((uintptr_t)_stack, REGION_SIZE(stack),
+			  BM_MEM_RAMSTAGE);
+	bootmem_add_range((uintptr_t)_program, REGION_SIZE(program),
+			  BM_MEM_RAMSTAGE);
bootmem_arch_add_ranges();
    bootmem_platform_add_ranges();
diff --git a/src/lib/cbmem_common.c b/src/lib/cbmem_common.c
index 4010494..d86edf0 100644
--- a/src/lib/cbmem_common.c
+++ b/src/lib/cbmem_common.c
@@ -24,7 +24,7 @@
    cbmem_init_hook_t *einit_hook_ptr =
    	(cbmem_init_hook_t *)&_ecbmem_init_hooks;
-	if (_cbmem_init_hooks_size == 0)
+	if (REGION_SIZE(cbmem_init_hooks) == 0)
    	return;
while (init_hook_ptr !=  einit_hook_ptr) {
diff --git a/src/lib/cbmem_console.c b/src/lib/cbmem_console.c
index 2f60fb5..b05b747 100644
--- a/src/lib/cbmem_console.c
+++ b/src/lib/cbmem_console.c
@@ -111,7 +111,8 @@
 {
 #ifdef __PRE_RAM__
    /* Pre-RAM environments use special buffer placed by linker script. */
-	init_console_ptr(_preram_cbmem_console, _preram_cbmem_console_size);
+	init_console_ptr(_preram_cbmem_console,
+			 REGION_SIZE(preram_cbmem_console));
 #else
    /* Post-RAM uses static (BSS) buffer before CBMEM is reinitialized. */
    init_console_ptr(static_console, sizeof(static_console));
diff --git a/src/lib/stack.c b/src/lib/stack.c
index ef45e2a..479ed93 100644
--- a/src/lib/stack.c
+++ b/src/lib/stack.c
@@ -30,7 +30,8 @@
 int checkstack(void *top_of_stack, int core)
 {
    /* Not all archs use CONFIG_STACK_SIZE, those who don't set it to 0. */
-	size_t stack_size = CONFIG_STACK_SIZE ? CONFIG_STACK_SIZE : _stack_size;
+	size_t stack_size = CONFIG_STACK_SIZE ?
+			    CONFIG_STACK_SIZE : REGION_SIZE(stack);
    int i;
    u32 *stack = (u32 *) (top_of_stack - stack_size);
diff --git a/src/lib/timestamp.c b/src/lib/timestamp.c
index 6885e7b..74f0a26 100644
--- a/src/lib/timestamp.c
+++ b/src/lib/timestamp.c
@@ -42,7 +42,7 @@
 DECLARE_OPTIONAL_REGION(timestamp);
#if defined(__PRE_RAM__)
-#define USE_TIMESTAMP_REGION (_timestamp_size > 0)
+#define USE_TIMESTAMP_REGION (REGION_SIZE(timestamp) > 0)
 #else
 #define USE_TIMESTAMP_REGION 0
 #endif
@@ -70,7 +70,7 @@
    ts_cache->cache_state = TIMESTAMP_CACHE_INITIALIZED;
if (USE_TIMESTAMP_REGION)
-		ts_cache->table.max_entries = (_timestamp_size -
+		ts_cache->table.max_entries = (REGION_SIZE(timestamp) -
    		offsetof(struct timestamp_cache, entries))
    		/ sizeof(struct timestamp_entry);
 }
@@ -82,7 +82,7 @@
    if (TIMESTAMP_CACHE_IN_BSS) {
    	ts_cache = &timestamp_cache;
    } else if (USE_TIMESTAMP_REGION) {
-		if (_timestamp_size < sizeof(*ts_cache))
+		if (REGION_SIZE(timestamp) < sizeof(*ts_cache))
    		BUG();
    	ts_cache = car_get_var_ptr((void *)_timestamp);
    }
diff --git a/src/mainboard/google/daisy/mainboard.c b/src/mainboard/google/daisy/mainboard.c
index 52cb329..e812189 100644
--- a/src/mainboard/google/daisy/mainboard.c
+++ b/src/mainboard/google/daisy/mainboard.c
@@ -326,7 +326,7 @@
    mmu_config_range(0, DRAM_START, DCACHE_OFF);
    mmu_config_range(DRAM_START, DRAM_SIZE, DCACHE_WRITEBACK);
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
    mmu_config_range(DRAM_END, 4096 - DRAM_END, DCACHE_OFF);
    dcache_mmu_enable();
@@ -353,5 +353,5 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
diff --git a/src/mainboard/google/gale/mainboard.c b/src/mainboard/google/gale/mainboard.c
index 3a69fa2..9e1a0f3 100644
--- a/src/mainboard/google/gale/mainboard.c
+++ b/src/mainboard/google/gale/mainboard.c
@@ -78,7 +78,7 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
if (IS_ENABLED(CONFIG_CHROMEOS)) {
    	/* Retrieve the switch interface MAC addresses. */
diff --git a/src/mainboard/google/gale/mmu.c b/src/mainboard/google/gale/mmu.c
index 4b0ffec..bf46f7a 100644
--- a/src/mainboard/google/gale/mmu.c
+++ b/src/mainboard/google/gale/mmu.c
@@ -29,7 +29,7 @@
/* DMA memory for drivers */
 #define DMA_START            ((uintptr_t)_dma_coherent / MiB)
-#define DMA_SIZE             (_dma_coherent_size / MiB)
+#define DMA_SIZE             (REGION_SIZE(dma_coherent) / MiB)
void setup_dram_mappings(enum dram_state dram)
 {
diff --git a/src/mainboard/google/gru/romstage.c b/src/mainboard/google/gru/romstage.c
index edf440d..0b944fe 100644
--- a/src/mainboard/google/gru/romstage.c
+++ b/src/mainboard/google/gru/romstage.c
@@ -74,5 +74,6 @@
mmu_config_range((void *)0, (uintptr_t)sdram_size_mb() * MiB,
    		 CACHED_MEM);
-	mmu_config_range(_dma_coherent, _dma_coherent_size, UNCACHED_MEM);
+	mmu_config_range(_dma_coherent, REGION_SIZE(dma_coherent),
+			 UNCACHED_MEM);
 }
diff --git a/src/mainboard/google/nyan/mainboard.c b/src/mainboard/google/nyan/mainboard.c
index b447a4a..47d6fb2 100644
--- a/src/mainboard/google/nyan/mainboard.c
+++ b/src/mainboard/google/nyan/mainboard.c
@@ -262,5 +262,5 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
diff --git a/src/mainboard/google/nyan/romstage.c b/src/mainboard/google/nyan/romstage.c
index b94d2dc..2dd4c2d 100644
--- a/src/mainboard/google/nyan/romstage.c
+++ b/src/mainboard/google/nyan/romstage.c
@@ -55,13 +55,14 @@
    /* Device memory below DRAM is uncached. */
    mmu_config_range(0, dram_start_mb, DCACHE_OFF);
    /* SRAM is cached. MMU code will round size up to page size. */
-	mmu_config_range((uintptr_t)_sram/MiB, DIV_ROUND_UP(_sram_size, MiB),
+	mmu_config_range((uintptr_t)_sram/MiB,
+			 DIV_ROUND_UP(REGION_SIZE(sram), MiB),
    		 DCACHE_WRITEBACK);
    /* DRAM is cached. */
    mmu_config_range(dram_start_mb, dram_size_mb, DCACHE_WRITEBACK);
    /* A window for DMA is uncached. */
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
    /* The space above DRAM is uncached. */
    if (dram_end_mb < 4096)
    	mmu_config_range(dram_end_mb, 4096 - dram_end_mb, DCACHE_OFF);
diff --git a/src/mainboard/google/nyan_big/mainboard.c b/src/mainboard/google/nyan_big/mainboard.c
index 5457be6..72d348d 100644
--- a/src/mainboard/google/nyan_big/mainboard.c
+++ b/src/mainboard/google/nyan_big/mainboard.c
@@ -260,5 +260,5 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
diff --git a/src/mainboard/google/nyan_big/romstage.c b/src/mainboard/google/nyan_big/romstage.c
index b94d2dc..2dd4c2d 100644
--- a/src/mainboard/google/nyan_big/romstage.c
+++ b/src/mainboard/google/nyan_big/romstage.c
@@ -55,13 +55,14 @@
    /* Device memory below DRAM is uncached. */
    mmu_config_range(0, dram_start_mb, DCACHE_OFF);
    /* SRAM is cached. MMU code will round size up to page size. */
-	mmu_config_range((uintptr_t)_sram/MiB, DIV_ROUND_UP(_sram_size, MiB),
+	mmu_config_range((uintptr_t)_sram/MiB,
+			 DIV_ROUND_UP(REGION_SIZE(sram), MiB),
    		 DCACHE_WRITEBACK);
    /* DRAM is cached. */
    mmu_config_range(dram_start_mb, dram_size_mb, DCACHE_WRITEBACK);
    /* A window for DMA is uncached. */
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
    /* The space above DRAM is uncached. */
    if (dram_end_mb < 4096)
    	mmu_config_range(dram_end_mb, 4096 - dram_end_mb, DCACHE_OFF);
diff --git a/src/mainboard/google/nyan_blaze/mainboard.c b/src/mainboard/google/nyan_blaze/mainboard.c
index 6b448cb..446bd53 100644
--- a/src/mainboard/google/nyan_blaze/mainboard.c
+++ b/src/mainboard/google/nyan_blaze/mainboard.c
@@ -260,5 +260,5 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
diff --git a/src/mainboard/google/nyan_blaze/romstage.c b/src/mainboard/google/nyan_blaze/romstage.c
index e44381f..30278f9 100644
--- a/src/mainboard/google/nyan_blaze/romstage.c
+++ b/src/mainboard/google/nyan_blaze/romstage.c
@@ -57,7 +57,8 @@
    /* Device memory below DRAM is uncached. */
    mmu_config_range(0, dram_start_mb, DCACHE_OFF);
    /* SRAM is cached. MMU code will round size up to page size. */
-	mmu_config_range((uintptr_t)_sram/MiB, DIV_ROUND_UP(_sram_size, MiB),
+	mmu_config_range((uintptr_t)_sram/MiB,
+			 DIV_ROUND_UP(REGION_SIZE(sram), MiB),
    		 DCACHE_WRITEBACK);
    /* The space above DRAM is uncached. */
    if (dram_end_mb < 4096)
@@ -70,7 +71,7 @@
    mmu_config_range(dram_start_mb, dram_size_mb, DCACHE_WRITEBACK);
    /* A window for DMA is uncached. */
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
/*
     * A watchdog reset only resets part of the system so it ends up in
diff --git a/src/mainboard/google/peach_pit/mainboard.c b/src/mainboard/google/peach_pit/mainboard.c
index 10f1506..a2df5f5 100644
--- a/src/mainboard/google/peach_pit/mainboard.c
+++ b/src/mainboard/google/peach_pit/mainboard.c
@@ -462,7 +462,7 @@
    /* set up caching for the DRAM */
    mmu_config_range(DRAM_START, DRAM_SIZE, DCACHE_WRITEBACK);
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
const unsigned epll_hz = 192000000;
    const unsigned sample_rate = 48000;
@@ -487,5 +487,5 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
diff --git a/src/mainboard/google/storm/mainboard.c b/src/mainboard/google/storm/mainboard.c
index 05f9821..b5dbbea 100644
--- a/src/mainboard/google/storm/mainboard.c
+++ b/src/mainboard/google/storm/mainboard.c
@@ -122,7 +122,7 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
#if IS_ENABLED(CONFIG_CHROMEOS)
    /* Retrieve the switch interface MAC addresses. */
diff --git a/src/mainboard/google/storm/mmu.c b/src/mainboard/google/storm/mmu.c
index ba773c5..9750cc1 100644
--- a/src/mainboard/google/storm/mmu.c
+++ b/src/mainboard/google/storm/mmu.c
@@ -27,7 +27,7 @@
/* DMA memory for drivers */
 #define DMA_START            ((uintptr_t)_dma_coherent / MiB)
-#define DMA_SIZE             (_dma_coherent_size / MiB)
+#define DMA_SIZE             (REGION_SIZE(dma_coherent) / MiB)
void setup_dram_mappings(enum dram_state dram)
 {
diff --git a/src/mainboard/google/urara/mainboard.c b/src/mainboard/google/urara/mainboard.c
index b5c1b7d..d7ed51e 100644
--- a/src/mainboard/google/urara/mainboard.c
+++ b/src/mainboard/google/urara/mainboard.c
@@ -47,7 +47,7 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
#if IS_ENABLED(CONFIG_CHROMEOS)
    /* Retrieve the switch interface MAC addresses. */
diff --git a/src/mainboard/google/veyron/mainboard.c b/src/mainboard/google/veyron/mainboard.c
index e435758..230c008 100644
--- a/src/mainboard/google/veyron/mainboard.c
+++ b/src/mainboard/google/veyron/mainboard.c
@@ -126,7 +126,7 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
void mainboard_power_on_backlight(void)
diff --git a/src/mainboard/google/veyron/romstage.c b/src/mainboard/google/veyron/romstage.c
index 1d85ee3..9d41049 100644
--- a/src/mainboard/google/veyron/romstage.c
+++ b/src/mainboard/google/veyron/romstage.c
@@ -102,7 +102,7 @@
    mmu_config_range((uintptr_t)_dram/MiB,
    		 sdram_size_mb(), DCACHE_WRITEBACK);
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
cbmem_initialize_empty();
diff --git a/src/mainboard/google/veyron_mickey/mainboard.c b/src/mainboard/google/veyron_mickey/mainboard.c
index 74e52ca..4b69cb1 100644
--- a/src/mainboard/google/veyron_mickey/mainboard.c
+++ b/src/mainboard/google/veyron_mickey/mainboard.c
@@ -105,7 +105,7 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
void mainboard_power_on_backlight(void)
diff --git a/src/mainboard/google/veyron_mickey/romstage.c b/src/mainboard/google/veyron_mickey/romstage.c
index 2262bae..31c3596 100644
--- a/src/mainboard/google/veyron_mickey/romstage.c
+++ b/src/mainboard/google/veyron_mickey/romstage.c
@@ -93,7 +93,7 @@
    mmu_config_range((uintptr_t)_dram/MiB,
    		 sdram_size_mb(), DCACHE_WRITEBACK);
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
cbmem_initialize_empty();
diff --git a/src/mainboard/google/veyron_rialto/mainboard.c b/src/mainboard/google/veyron_rialto/mainboard.c
index 40914ef..e3aa901 100644
--- a/src/mainboard/google/veyron_rialto/mainboard.c
+++ b/src/mainboard/google/veyron_rialto/mainboard.c
@@ -111,7 +111,7 @@
    dma->tag = LB_TAB_DMA;
    dma->size = sizeof(*dma);
    dma->range_start = (uintptr_t)_dma_coherent;
-	dma->range_size = _dma_coherent_size;
+	dma->range_size = REGION_SIZE(dma_coherent);
 }
void mainboard_power_on_backlight(void)
diff --git a/src/mainboard/google/veyron_rialto/romstage.c b/src/mainboard/google/veyron_rialto/romstage.c
index f32bf3a..4dd7e0c 100644
--- a/src/mainboard/google/veyron_rialto/romstage.c
+++ b/src/mainboard/google/veyron_rialto/romstage.c
@@ -103,7 +103,7 @@
    mmu_config_range((uintptr_t)_dram/MiB,
    		 sdram_size_mb(), DCACHE_WRITEBACK);
    mmu_config_range((uintptr_t)_dma_coherent/MiB,
-			 _dma_coherent_size/MiB, DCACHE_OFF);
+			 REGION_SIZE(dma_coherent)/MiB, DCACHE_OFF);
cbmem_initialize_empty();
diff --git a/src/security/vboot/common.c b/src/security/vboot/common.c
index 747644a..da4e1ca 100644
--- a/src/security/vboot/common.c
+++ b/src/security/vboot/common.c
@@ -56,7 +56,7 @@
    if (IS_ENABLED(CONFIG_VBOOT_STARTS_IN_ROMSTAGE))
    	return vb_work_buf_size;
    else
-		return _vboot2_work_size;
+		return REGION_SIZE(vboot2_work);
 }
static struct selected_region *vb2_selected_region(void)
diff --git a/src/security/vboot/symbols.h b/src/security/vboot/symbols.h
index ddf9d95..e8ea580 100644
--- a/src/security/vboot/symbols.h
+++ b/src/security/vboot/symbols.h
@@ -16,8 +16,8 @@
 #ifndef __VBOOT_SYMBOLS_H__
 #define __VBOOT_SYMBOLS_H__
-extern u8 _vboot2_work[];
-extern u8 _evboot2_work[];
-#define _vboot2_work_size (_evboot2_work - _vboot2_work)
+#include <symbols.h>
+
+DECLARE_REGION(vboot2_work)
#endif /* __VBOOT_SYMBOLS_H__ */
diff --git a/src/soc/cavium/cn81xx/cpu.c b/src/soc/cavium/cn81xx/cpu.c
index 9504868..b655d8a 100644
--- a/src/soc/cavium/cn81xx/cpu.c
+++ b/src/soc/cavium/cn81xx/cpu.c
@@ -81,7 +81,7 @@
    	return 1;
/* Check stack here, instead of in cpu_secondary.S */
-	if ((CONFIG_STACK_SIZE * cpu) > _stack_sec_size)
+	if ((CONFIG_STACK_SIZE * cpu) > REGION_SIZE(stack_sec))
    	return 1;
/* Write the address of the main entry point */
diff --git a/src/soc/cavium/cn81xx/include/soc/cpu.h b/src/soc/cavium/cn81xx/include/soc/cpu.h
index 1c6a30d..7d3647b 100644
--- a/src/soc/cavium/cn81xx/include/soc/cpu.h
+++ b/src/soc/cavium/cn81xx/include/soc/cpu.h
@@ -18,6 +18,7 @@
 #define __SOC_CAVIUM_CN81XX_CPU_H__
#include <stdint.h>
+#include <symbols.h>
/**
  * Number of the Core on which the program is currently running.
@@ -70,8 +71,6 @@
/* Symbols in memlayout.ld */
-extern u8 _stack_sec[];
-extern u8 _estack_sec[];
-#define _stack_sec_size (_estack_sec - _stack_sec)
+DECLARE_REGION(stack_sec)
#endif	/* __SOC_CAVIUM_CN81XX_CPU_H__ */
diff --git a/src/soc/cavium/cn81xx/mmu.c b/src/soc/cavium/cn81xx/mmu.c
index d6e7ac5..17b43e7 100644
--- a/src/soc/cavium/cn81xx/mmu.c
+++ b/src/soc/cavium/cn81xx/mmu.c
@@ -31,7 +31,7 @@
     * Need to use secure mem attribute, as firmware is running in ARM TZ
     * region.
     */
-	mmu_config_range((void *)_ttb, _ttb_size, secure_mem);
+	mmu_config_range((void *)_ttb, REGION_SIZE(ttb), secure_mem);
    mmu_config_range((void *)_dram, sdram_size_mb() * MiB, secure_mem);
    /* IO space has the MSB set and is divided into 4 sub-regions:
     * * NCB
diff --git a/src/soc/cavium/common/bootblock.c b/src/soc/cavium/common/bootblock.c
index 7b9d524..a512dff 100644
--- a/src/soc/cavium/common/bootblock.c
+++ b/src/soc/cavium/common/bootblock.c
@@ -42,7 +42,7 @@
    	base_timestamp = timestamp_get();
/* Initialize timestamps if we have TIMESTAMP region in memlayout.ld. */
-	if (IS_ENABLED(CONFIG_COLLECT_TIMESTAMPS) && _timestamp_size > 0)
+	if (IS_ENABLED(CONFIG_COLLECT_TIMESTAMPS) && REGION_SIZE(timestamp) > 0)
    	timestamp_init(base_timestamp);
bootblock_soc_early_init();
diff --git a/src/soc/imgtec/pistachio/bootblock.c b/src/soc/imgtec/pistachio/bootblock.c
index 91c591e..ac4a740 100644
--- a/src/soc/imgtec/pistachio/bootblock.c
+++ b/src/soc/imgtec/pistachio/bootblock.c
@@ -54,9 +54,9 @@
    	dram_base += null_guard_size;
    	dram_size -= null_guard_size;
    }
-	assert(!identity_map((uint32_t)_sram, _sram_size,
+	assert(!identity_map((uint32_t)_sram, REGION_SIZE(sram),
    					C0_ENTRYLO_COHERENCY_WB));
    assert(!identity_map(dram_base, dram_size, C0_ENTRYLO_COHERENCY_WB));
-	assert(!identity_map((uint32_t)_soc_registers, _soc_registers_size,
-						C0_ENTRYLO_COHERENCY_UC));
+	assert(!identity_map((uint32_t)_soc_registers,
+		REGION_SIZE(soc_registers), C0_ENTRYLO_COHERENCY_UC));
 }
diff --git a/src/soc/mediatek/common/include/soc/mmu_operations.h b/src/soc/mediatek/common/include/soc/mmu_operations.h
index 79c3ea0..7fa847f 100644
--- a/src/soc/mediatek/common/include/soc/mmu_operations.h
+++ b/src/soc/mediatek/common/include/soc/mmu_operations.h
@@ -17,6 +17,7 @@
 #define __SOC_MEDIATEK_COMMON_MMU_OPERATIONS_H__
#include <arch/mmu.h>
+#include <symbols.h>
enum {
    DEV_MEM			= MA_DEV | MA_S  | MA_RW,
@@ -26,9 +27,7 @@
    NONSECURE_UNCACHED_MEM	= MA_MEM | MA_NS | MA_RW | MA_MEM_NC,
 };
-extern unsigned char _sram_l2c[];
-extern unsigned char _esram_l2c[];
-#define _sram_l2c_size (_esram_l2c - _sram_l2c)
+DECLARE_REGION(sram_l2c)
void mtk_soc_after_dram(void);
 void mtk_soc_disable_l2c_sram(void);
diff --git a/src/soc/mediatek/common/mmu_operations.c b/src/soc/mediatek/common/mmu_operations.c
index 4467070..7292487 100644
--- a/src/soc/mediatek/common/mmu_operations.c
+++ b/src/soc/mediatek/common/mmu_operations.c
@@ -32,13 +32,13 @@
    mmu_config_range((void *)0, (uintptr_t)4U * GiB, DEV_MEM);
/* SRAM is cached */
-	mmu_config_range(_sram, _sram_size, SECURE_CACHED_MEM);
+	mmu_config_range(_sram, REGION_SIZE(sram), SECURE_CACHED_MEM);
/* L2C SRAM is cached */
-	mmu_config_range(_sram_l2c, _sram_l2c_size, SECURE_CACHED_MEM);
+	mmu_config_range(_sram_l2c, REGION_SIZE(sram_l2c), SECURE_CACHED_MEM);
/* DMA is non-cached and is reserved for TPM & da9212 I2C DMA */
-	mmu_config_range(_dma_coherent, _dma_coherent_size,
+	mmu_config_range(_dma_coherent, REGION_SIZE(dma_coherent),
    		 SECURE_UNCACHED_MEM);
mmu_enable();
@@ -56,7 +56,7 @@
 {
    /* Unmap L2C SRAM so it can be reclaimed by L2 cache */
    /* TODO: Implement true unmapping, and also use it for the zero-page! */
-	mmu_config_range(_sram_l2c, _sram_l2c_size, DEV_MEM);
+	mmu_config_range(_sram_l2c, REGION_SIZE(sram_l2c), DEV_MEM);
/* Careful: changing cache geometry while it's active is a bad idea! */
    mmu_disable();
diff --git a/src/soc/mediatek/mt8173/flash_controller.c b/src/soc/mediatek/mt8173/flash_controller.c
index 0fe9bb4..d63b69c 100644
--- a/src/soc/mediatek/mt8173/flash_controller.c
+++ b/src/soc/mediatek/mt8173/flash_controller.c
@@ -171,10 +171,10 @@
if (ENV_BOOTBLOCK || ENV_VERSTAGE) {
    	dma_buf = (uintptr_t)_dma_coherent;
-		dma_buf_len = _dma_coherent_size;
+		dma_buf_len = REGION_SIZE(dma_coherent);
    } else {
    	dma_buf = (uintptr_t)_dram_dma;
-		dma_buf_len = _dram_dma_size;
+		dma_buf_len = REGION_SIZE(dram_dma);
    }
while (len - done >= SFLASH_DMA_ALIGN) {
diff --git a/src/soc/mediatek/mt8173/include/soc/symbols.h b/src/soc/mediatek/mt8173/include/soc/symbols.h
index 8e2d0a4..85cfd78 100644
--- a/src/soc/mediatek/mt8173/include/soc/symbols.h
+++ b/src/soc/mediatek/mt8173/include/soc/symbols.h
@@ -16,8 +16,6 @@
 #ifndef __SOC_MEDIATEK_MT8173_DRAM_DMA_H__
 #define __SOC_MEDIATEK_MT8173_DRAM_DMA_H__
-extern unsigned char _dram_dma[];
-extern unsigned char _edram_dma[];
-#define _dram_dma_size (_edram_dma - _dram_dma)
+DECLARE_REGION(dram_dma)
#endif
diff --git a/src/soc/mediatek/mt8173/mmu_operations.c b/src/soc/mediatek/mt8173/mmu_operations.c
index 443bc6e..c802264 100644
--- a/src/soc/mediatek/mt8173/mmu_operations.c
+++ b/src/soc/mediatek/mt8173/mmu_operations.c
@@ -23,7 +23,8 @@
void mtk_soc_after_dram(void)
 {
-	mmu_config_range(_dram_dma, _dram_dma_size, NONSECURE_UNCACHED_MEM);
+	mmu_config_range(_dram_dma, REGION_SIZE(dram_dma),
+			 NONSECURE_UNCACHED_MEM);
    mtk_mmu_disable_l2c_sram();
 }
diff --git a/src/soc/nvidia/tegra124/verstage.c b/src/soc/nvidia/tegra124/verstage.c
index d99f1a7..2495351 100644
--- a/src/soc/nvidia/tegra124/verstage.c
+++ b/src/soc/nvidia/tegra124/verstage.c
@@ -30,7 +30,8 @@
    /* Whole space is uncached. */
    mmu_config_range(0, 4096, DCACHE_OFF);
    /* SRAM is cached. MMU code will round size up to page size. */
-	mmu_config_range((uintptr_t)_sram/MiB, DIV_ROUND_UP(_sram_size, MiB),
+	mmu_config_range((uintptr_t)_sram/MiB,
+			 DIV_ROUND_UP(REGION_SIZE(sram), MiB),
    		 DCACHE_WRITEBACK);
    mmu_disable_range(0, 1);
    dcache_mmu_enable();
diff --git a/src/soc/nvidia/tegra210/mmu_operations.c b/src/soc/nvidia/tegra210/mmu_operations.c
index de7ae2f..9cee6b2 100644
--- a/src/soc/nvidia/tegra210/mmu_operations.c
+++ b/src/soc/nvidia/tegra210/mmu_operations.c
@@ -45,7 +45,7 @@
    mmu_config_range((void *)(start * MiB), (end-start) * MiB, cachedmem);
/* SRAM */
-	mmu_config_range(_sram, _sram_size, cachedmem);
+	mmu_config_range(_sram, REGION_SIZE(sram), cachedmem);
/* Add TZ carveout. */
    carveout_range(CARVEOUT_TZ, &tz_base_mib, &tz_size_mib);
@@ -89,8 +89,8 @@
     *
     */
    carveout_range(CARVEOUT_TZ, &tz_base_mib, &tz_size_mib);
-	assert((uintptr_t)_ttb + _ttb_size == (tz_base_mib + tz_size_mib) * MiB
-		&& _ttb_size <= tz_size_mib * MiB);
+	assert((uintptr_t)_ttb + REGION_SIZE(ttb) == (tz_base_mib + tz_size_mib)
+		* MiB && REGION_SIZE(ttb) <= tz_size_mib * MiB);
mmu_enable();
 }
diff --git a/src/soc/qualcomm/sdm845/include/soc/symbols.h b/src/soc/qualcomm/sdm845/include/soc/symbols.h
index 163b54d..1c14c03 100644
--- a/src/soc/qualcomm/sdm845/include/soc/symbols.h
+++ b/src/soc/qualcomm/sdm845/include/soc/symbols.h
@@ -16,18 +16,11 @@
 #ifndef _SOC_QUALCOMM_SDM845_SYMBOLS_H_
 #define _SOC_QUALCOMM_SDM845_SYMBOLS_H_
+#include <symbols.h>
 #include <types.h>
-extern u8 _ssram[];
-extern u8 _essram[];
-#define _ssram_size (_essram - _ssram)
-
-extern u8 _bsram[];
-extern u8 _ebsram[];
-#define _bsram_size (_ebsram - _bsram)
-
-extern u8 _dram_reserved[];
-extern u8 _edram_reserved[];
-#define _dram_reserved_size (_edram_reserved - _dram_reserved)
+DECLARE_REGION(ssram)
+DECLARE_REGION(bsram)
+DECLARE_REGION(dram_reserved)
#endif // _SOC_QUALCOMM_SDM845_SYMBOLS_H_
diff --git a/src/soc/qualcomm/sdm845/mmu.c b/src/soc/qualcomm/sdm845/mmu.c
index 52e7733..ef6c058 100644
--- a/src/soc/qualcomm/sdm845/mmu.c
+++ b/src/soc/qualcomm/sdm845/mmu.c
@@ -28,9 +28,9 @@
    mmu_init();
mmu_config_range((void *)(4 * KiB), ((4UL * GiB) - (4 * KiB)), DEV_MEM);
-	mmu_config_range((void *)_ssram, _ssram_size, CACHED_RAM);
-	mmu_config_range((void *)_bsram, _bsram_size, CACHED_RAM);
-	mmu_config_range((void *)_dma_coherent, _dma_coherent_size,
+	mmu_config_range((void *)_ssram, REGION_SIZE(ssram), CACHED_RAM);
+	mmu_config_range((void *)_bsram, REGION_SIZE(bsram), CACHED_RAM);
+	mmu_config_range((void *)_dma_coherent, REGION_SIZE(dma_coherent),
    		 UNCACHED_RAM);
mmu_enable();
diff --git a/src/soc/qualcomm/sdm845/soc.c b/src/soc/qualcomm/sdm845/soc.c
index 56e2c84..e4eac96 100644
--- a/src/soc/qualcomm/sdm845/soc.c
+++ b/src/soc/qualcomm/sdm845/soc.c
@@ -23,7 +23,7 @@
 {
    ram_resource(dev, 0, (uintptr_t)_dram / KiB, DRAMSIZE4GB / KiB);
    reserved_ram_resource(dev, 1, (uintptr_t)_dram_reserved / KiB,
-				_dram_reserved_size / KiB);
+				REGION_SIZE(dram_reserved) / KiB);
 }
static void soc_init(struct device *dev)
diff --git a/src/soc/rockchip/rk3288/bootblock.c b/src/soc/rockchip/rk3288/bootblock.c
index 7308241..5ccfebd 100644
--- a/src/soc/rockchip/rk3288/bootblock.c
+++ b/src/soc/rockchip/rk3288/bootblock.c
@@ -33,7 +33,7 @@
    /* SRAM is tightly wedged between registers, need to use subtables. Map
     * write-through as equivalent for non-cacheable without XN on A17. */
    mmu_config_range_kb((uintptr_t)_sram/KiB,
-			    _sram_size/KiB, DCACHE_WRITETHROUGH);
+			    REGION_SIZE(sram)/KiB, DCACHE_WRITETHROUGH);
    dcache_mmu_enable();
rkclk_configure_crypto(148500*KHz);
diff --git a/src/soc/rockchip/rk3288/soc.c b/src/soc/rockchip/rk3288/soc.c
index c0a2ed0..ad679e5 100644
--- a/src/soc/rockchip/rk3288/soc.c
+++ b/src/soc/rockchip/rk3288/soc.c
@@ -34,7 +34,7 @@
    ram_resource(dev, 0, (uintptr_t)_dram/KiB, sdram_size_mb()*(MiB/KiB));
    if (display_init_required())
    	rk_display_init(dev, (uintptr_t)_framebuffer,
-				_framebuffer_size);
+				REGION_SIZE(framebuffer));
    else
    	printk(BIOS_INFO, "Skipping display init.\n");
 }
diff --git a/src/soc/rockchip/rk3399/decompressor.c b/src/soc/rockchip/rk3399/decompressor.c
index f4ca5d1..a17900d 100644
--- a/src/soc/rockchip/rk3399/decompressor.c
+++ b/src/soc/rockchip/rk3399/decompressor.c
@@ -30,7 +30,7 @@
     */
    mmu_config_range((void *)0, (uintptr_t)4 * GiB, DEV_MEM);
-	mmu_config_range(_sram, _sram_size, SECURE_MEM);
+	mmu_config_range(_sram, REGION_SIZE(sram), SECURE_MEM);
mmu_enable();
 }
diff --git a/src/soc/rockchip/rk3399/include/soc/symbols.h b/src/soc/rockchip/rk3399/include/soc/symbols.h
index f1487d0..a40a7c4 100644
--- a/src/soc/rockchip/rk3399/include/soc/symbols.h
+++ b/src/soc/rockchip/rk3399/include/soc/symbols.h
@@ -16,12 +16,9 @@
 #ifndef __SOC_SYMBOLS_H__
 #define __SOC_SYMBOLS_H__
-extern unsigned char _bl31_sram[];
-extern unsigned char _ebl31_sram[];
-#define _bl31_sram_size (_ebl31_sram - _bl31_sram)
+#include <symbols.h>
-extern unsigned char _pmu_sram[];
-extern unsigned char _epmu_sram[];
-#define _pmu_sram_size (_epmu_sram - _pmu_sram)
+DECLARE_REGION(bl31_sram)
+DECLARE_REGION(pmu_sram)
#endif
diff --git a/src/soc/rockchip/rk3399/soc.c b/src/soc/rockchip/rk3399/soc.c
index 8960c9e..6e5e1a7 100644
--- a/src/soc/rockchip/rk3399/soc.c
+++ b/src/soc/rockchip/rk3399/soc.c
@@ -30,8 +30,10 @@
void bootmem_platform_add_ranges(void)
 {
-	bootmem_add_range((uintptr_t)_pmu_sram, _pmu_sram_size, BM_MEM_BL31);
-	bootmem_add_range((uintptr_t)_bl31_sram, _bl31_sram_size, BM_MEM_BL31);
+	bootmem_add_range((uintptr_t)_pmu_sram, REGION_SIZE(pmu_sram),
+			  BM_MEM_BL31);
+	bootmem_add_range((uintptr_t)_bl31_sram, REGION_SIZE(bl31_sram),
+			  BM_MEM_BL31);
 }
static void soc_read_resources(struct device *dev)
diff --git a/src/soc/samsung/exynos5250/alternate_cbfs.c b/src/soc/samsung/exynos5250/alternate_cbfs.c
index 0687d47..e7ceedb 100644
--- a/src/soc/samsung/exynos5250/alternate_cbfs.c
+++ b/src/soc/samsung/exynos5250/alternate_cbfs.c
@@ -88,7 +88,7 @@
     * figuring out the true image size from in here. Since this is mainly a
     * developer/debug boot mode, those shortcomings should be bearable.
     */
-	const u32 count = _cbfs_cache_size / 512;
+	const u32 count = REGION_SIZE(cbfs_cache) / 512;
    static int first_run = 1;
    int (*irom_load_sdmmc)(u32 start, u32 count, void *dst) =
    	*irom_sdmmc_read_blocks_ptr;
@@ -131,7 +131,7 @@
 void boot_device_init(void)
 {
    mem_region_device_ro_init(&alternate_rdev, _cbfs_cache,
-			_cbfs_cache_size);
+			REGION_SIZE(cbfs_cache));
if (*iram_secondary_base == SECONDARY_BASE_BOOT_USB) {
    	printk(BIOS_DEBUG, "Using Exynos alternate boot mode USB A-A\n");
diff --git a/src/soc/samsung/exynos5250/spi.c b/src/soc/samsung/exynos5250/spi.c
index 9406abb..ae67407 100644
--- a/src/soc/samsung/exynos5250/spi.c
+++ b/src/soc/samsung/exynos5250/spi.c
@@ -179,7 +179,7 @@
 {
    boot_slave_regs = (void *)EXYNOS5_SPI1_BASE;
-	mmap_helper_device_init(&mdev, _cbfs_cache, _cbfs_cache_size);
+	mmap_helper_device_init(&mdev, _cbfs_cache, REGION_SIZE(cbfs_cache));
 }
const struct region_device *exynos_spi_boot_device(void)
diff --git a/src/soc/samsung/exynos5420/alternate_cbfs.c b/src/soc/samsung/exynos5420/alternate_cbfs.c
index 183c371..98674ba 100644
--- a/src/soc/samsung/exynos5420/alternate_cbfs.c
+++ b/src/soc/samsung/exynos5420/alternate_cbfs.c
@@ -92,7 +92,7 @@
     * figuring out the true image size from in here. Since this is mainly a
     * developer/debug boot mode, those shortcomings should be bearable.
     */
-	const u32 count = _cbfs_cache_size / 512;
+	const u32 count = REGION_SIZE(cbfs_cache) / 512;
    static int first_run = 1;
    int (*irom_load_sdmmc)(u32 start, u32 count, void *dst) =
    	*irom_sdmmc_read_blocks_ptr;
@@ -138,7 +138,7 @@
 void boot_device_init(void)
 {
    mem_region_device_ro_init(&alternate_rdev, _cbfs_cache,
-			_cbfs_cache_size);
+			REGION_SIZE(cbfs_cache));
if (*iram_secondary_base == SECONDARY_BASE_BOOT_USB) {
    	printk(BIOS_DEBUG, "Using Exynos alternate boot mode USB A-A\n");
diff --git a/src/soc/samsung/exynos5420/spi.c b/src/soc/samsung/exynos5420/spi.c
index 2023b10..3ce9457 100644
--- a/src/soc/samsung/exynos5420/spi.c
+++ b/src/soc/samsung/exynos5420/spi.c
@@ -287,7 +287,7 @@
 {
    boot_slave = &exynos_spi_slaves[1];
-	mmap_helper_device_init(&mdev, _cbfs_cache, _cbfs_cache_size);
+	mmap_helper_device_init(&mdev, _cbfs_cache, REGION_SIZE(cbfs_cache));
 }
const struct region_device *exynos_spi_boot_device(void)
diff --git a/src/vendorcode/google/chromeos/symbols.h b/src/vendorcode/google/chromeos/symbols.h
index d8e1ead..5347645 100644
--- a/src/vendorcode/google/chromeos/symbols.h
+++ b/src/vendorcode/google/chromeos/symbols.h
@@ -16,8 +16,8 @@
 #ifndef __CHROMEOS_SYMBOLS_H
 #define __CHROMEOS_SYMBOLS_H
-extern u8 _watchdog_tombstone[];
-extern u8 _ewatchdog_tombstone[];
-#define _watchdog_tombstone_size (_ewatchdog_tombstone - _watchdog_tombstone)
+#include <symbols.h>
+
+DECLARE_REGION(watchdog_tombstone)
#endif /* __CHROMEOS_SYMBOLS_H */
diff --git a/src/vendorcode/google/chromeos/watchdog.c b/src/vendorcode/google/chromeos/watchdog.c
index 61619ce..1b9045c 100644
--- a/src/vendorcode/google/chromeos/watchdog.c
+++ b/src/vendorcode/google/chromeos/watchdog.c
@@ -30,7 +30,7 @@
static void elog_handle_watchdog_tombstone(void *unused)
 {
-	if (!_watchdog_tombstone_size)
+	if (!REGION_SIZE(watchdog_tombstone))
    	return;
if (read32(_watchdog_tombstone) == WATCHDOG_TOMBSTONE_MAGIC)
@@ -44,7 +44,7 @@
void mark_watchdog_tombstone(void)
 {
-	assert(_watchdog_tombstone_size);
+	assert(REGION_SIZE(watchdog_tombstone));
    write32(_watchdog_tombstone, WATCHDOG_TOMBSTONE_MAGIC);
 }
-- 
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-Change-Id: I44727d77d1de75882c72a94f29bd7e2c27741dd8
Gerrit-Change-Number: 31539
Gerrit-PatchSet: 1
Gerrit-Owner: Julius Werner jwerner@chromium.org
Gerrit-Reviewer: Aaron Durbin adurbin@chromium.org
Gerrit-Reviewer: Julius Werner jwerner@chromium.org
Gerrit-Reviewer: Patrick Rudolph siro@das-labor.org
Gerrit-MessageType: newchange



    