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Framebuffer in SRAM in the linker script

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This commit is contained in:
Romain Goyet
2015-05-11 21:10:37 +02:00
parent 283bb01ec6
commit 0b6a5935ed
1 changed files with 11 additions and 3 deletions
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14
platform/stm32f429/boot/flash.ld
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@@ -10,7 +10,9 @@
* to be stored in Flash. */
MEMORY {
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K
RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 192K
/* We're splitting the SRAM in two: general purpose, then framebuffer */
SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 117K
SRAM_FB (rw) : ORIGIN = 0x2001D400, LENGTH = 75K
/* We're splitting the CCM in two, this way we're sure nothing will use the
* stack space. */
CCM (rwx) : ORIGIN = 0x10000000, LENGTH = 60K
@@ -118,7 +120,7 @@ SECTIONS {
*(.data)
*(.data.*)
_data_section_end_ram = .;
} >RAM AT> FLASH
} >SRAM AT> FLASH
.bss : {
/* The bss section contains data for all uninitialized variables
@@ -132,7 +134,7 @@ SECTIONS {
*(.bss)
*(.bss.*)
_bss_section_end_ram = .;
} >RAM
} >SRAM
.ccm : {
. = ALIGN(8);
@@ -141,4 +143,10 @@ SECTIONS {
. = ALIGN(8);
_stack_start = .;
} >CCM_STACK
.fb : {
_framebuffer_start = .;
. = . + LENGTH(SRAM_FB);
_framebuffer_end = .;
} > SRAM_FB
}