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Clean up eboot

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This commit is contained in:
Ivan Grokhotkov
2015-06-05 08:08:53 +03:00
parent a4126b1235
commit 73740d6e6d
7 changed files with 88 additions and 52 deletions
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42
bootloaders/eboot/flash.c Normal file
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@ -0,0 +1,42 @@
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include "flash.h"
int SPIEraseAreaEx(const uint32_t start, const uint32_t size)
{
if (start & (FLASH_SECTOR_SIZE - 1) != 0) {
return 1;
}
const uint32_t sectors_per_block = FLASH_BLOCK_SIZE / FLASH_SECTOR_SIZE;
uint32_t current_sector = start / FLASH_SECTOR_SIZE;
uint32_t sector_count = (size + FLASH_SECTOR_SIZE - 1) / FLASH_SECTOR_SIZE;
const uint32_t end = current_sector + sector_count;
for (; current_sector < end && (current_sector & (sectors_per_block-1));
++current_sector, --sector_count) {
if (SPIEraseSector(current_sector)) {
return 2;
}
}
for (;current_sector + sectors_per_block <= end;
current_sector += sectors_per_block,
sector_count -= sectors_per_block) {
if (SPIEraseBlock(current_sector / sectors_per_block)) {
return 3;
}
}
for (; current_sector < end;
++current_sector, --sector_count) {
if (SPIEraseSector(current_sector)) {
return 4;
}
}
return 0;
}