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esp32s2: put static .data and .bss directly after .iram.text

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This results in a single large heap section instead of two smaller
ones.

Closes IDF-1354
This commit is contained in:
Ivan Grokhotkov
2020-01-21 19:56:33 +01:00
parent 27bff3517f
commit 110f3c9ff5
2 changed files with 12 additions and 13 deletions
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14
components/esp32s2/ld/esp32s2.ld
View File

@@ -26,16 +26,16 @@
#define RAM_IRAM_START 0x40020000
#define RAM_DRAM_START 0x3FFB0000
#define DATA_RAM_END 0x3FFF0000 /* start address of bootloader */
#define DATA_RAM_END 0x3FFE4000 /* 2nd stage bootloader iram_loader_seg starts at block 15 */
#define IRAM_ORG (RAM_IRAM_START + CONFIG_ESP32S2_INSTRUCTION_CACHE_SIZE \
+ CONFIG_ESP32S2_DATA_CACHE_SIZE)
#define IRAM_SIZE 0x18000
#define DRAM_ORG (RAM_DRAM_START + CONFIG_ESP32S2_INSTRUCTION_CACHE_SIZE \
+ CONFIG_ESP32S2_DATA_CACHE_SIZE \
+ IRAM_SIZE)
#define DRAM_SIZE DATA_RAM_END - DRAM_ORG
+ CONFIG_ESP32S2_DATA_CACHE_SIZE)
#define I_D_RAM_SIZE DATA_RAM_END - DRAM_ORG
MEMORY
{
@@ -44,7 +44,7 @@ MEMORY
are connected to the data port of the CPU and eg allow bytewise access. */
/* IRAM for CPU.*/
iram0_0_seg (RX) : org = IRAM_ORG, len = IRAM_SIZE
iram0_0_seg (RX) : org = IRAM_ORG, len = I_D_RAM_SIZE
#ifdef CONFIG_APP_BUILD_USE_FLASH_SECTIONS
/* Even though the segment name is iram, it is actually mapped to flash
@@ -62,7 +62,7 @@ MEMORY
/* Shared data RAM, excluding memory reserved for bootloader and ROM bss/data/stack. */
dram0_0_seg (RW) : org = DRAM_ORG, len = DRAM_SIZE
dram0_0_seg (RW) : org = DRAM_ORG, len = I_D_RAM_SIZE
#ifdef CONFIG_APP_BUILD_USE_FLASH_SECTIONS
/* Flash mapped constant data */

11
components/esp32s2/ld/esp32s2.project.ld.in
View File

@@ -164,8 +164,10 @@ SECTIONS
_iram_end = ABSOLUTE(.);
} > iram0_0_seg
ASSERT(((_iram_text_end - ORIGIN(iram0_0_seg)) <= LENGTH(iram0_0_seg)),
"IRAM0 segment data does not fit.")
.dram0_reserved_for_iram (NOLOAD):
{
. = ORIGIN(dram0_0_seg) + _iram_end - _iram_start;
} > dram0_0_seg
.dram0.data :
{
@@ -243,9 +245,6 @@ SECTIONS
_heap_start = ABSOLUTE(.);
} > dram0_0_seg
ASSERT(((_bss_end - ORIGIN(dram0_0_seg)) <= LENGTH(dram0_0_seg)),
"DRAM segment data does not fit.")
/* When modifying the alignment, update tls_section_alignment in pxPortInitialiseStack */
.flash.rodata : ALIGN(0x10)
{
@@ -349,5 +348,5 @@ SECTIONS
ASSERT(((_iram_text_end - ORIGIN(iram0_0_seg)) <= LENGTH(iram0_0_seg)),
"IRAM0 segment data does not fit.")
ASSERT(((_heap_start - ORIGIN(dram0_0_seg)) <= LENGTH(dram0_0_seg)),
ASSERT(((_heap_start - _data_start) <= LENGTH(dram0_0_seg)),
"DRAM segment data does not fit.")