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stm32: add dual flash bank support

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This patch adds the initial dual flash bank support for devices such
as the stm32xl family.

Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
This commit is contained in:
Spencer Oliver
2010-12-22 17:18:14 +00:00
parent 921f40f62a
commit 83e5aaf577
2 changed files with 40 additions and 28 deletions
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contrib/loaders/flash/stm32x.S
+3 -2
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@@ -29,8 +29,8 @@
r0 - source address
r1 - target address
r2 - count (halfword-16bit)
r3 - result
r4 - temp
r3 - sector offet in : result out
r4 - flash base
*/
#define STM32_FLASH_CR_OFFSET 0x10 /* offset of CR register in FLASH struct */
@@ -38,6 +38,7 @@
write:
ldr r4, STM32_FLASH_BASE
add r4, r3 /* add offset 0x00 for sector 0 : 0x40 for sector 1 */
write_half_word:
movs r3, #0x01
str r3, [r4, #STM32_FLASH_CR_OFFSET] /* PG (bit0) == 1 => flash programming enabled */