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stm32l1: desig: handle flash size footnotes from refman

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Some of the chipid variants have some footnotes on reading the flash
size register, make sure we report things nicely.
This commit is contained in:
Karl Palsson
2020-10-16 10:35:57 +00:00
parent 636918732d
commit 1acfa1c917
1 changed files with 7 additions and 2 deletions
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9
lib/stm32/l1/desig.c
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@@ -23,15 +23,20 @@
uint16_t desig_get_flash_size(void)
{
uint32_t v;
uint32_t device_id = DBGMCU_IDCODE & DBGMCU_IDCODE_DEV_ID_MASK;
switch (device_id) {
case 0x416:
case 0x429:
return *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT12;
case 0x429:
v = *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT12;
return v & 0xff;
case 0x427:
case 0x436:
case 0x437:
return *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT3456;
case 0x436:
v = *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT3456;
return v ? 256 : 384;
}
cm3_assert_not_reached();