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lmi: Implemented mass erase

This commit is contained in:
dragonmux 2022-07-12 00:14:16 -04:00 committed by Piotr Esden-Tempski
parent 90b7362162
commit b84f883aeb
1 changed files with 15 additions and 13 deletions
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28
src/target/lmi.c
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@ -48,8 +48,8 @@
#define LMI_FLASH_FMC_WRKEY 0xA4420000
static int lmi_flash_erase(struct target_flash *f, target_addr addr, size_t len);
static int lmi_flash_write(struct target_flash *f,
target_addr dest, const void *src, size_t len);
static int lmi_flash_write(struct target_flash *f, target_addr dest, const void *src, size_t len);
static bool lmi_mass_erase(target *t);
static const char lmi_driver_str[] = "TI Stellaris/Tiva";
@ -77,6 +77,7 @@ static void lmi_add_flash(target *t, size_t length)
bool lmi_probe(target *t)
{
uint32_t did1 = target_mem_read32(t, LMI_SCB_DID1);
t->mass_erase = lmi_mass_erase;
switch (did1 >> 16) {
case 0x1049: /* LM3S3748 */
t->driver = lmi_driver_str;
@ -108,21 +109,21 @@ bool lmi_probe(target *t)
t->target_options |= CORTEXM_TOPT_INHIBIT_NRST;
return true;
}
t->mass_erase = NULL;
return false;
}
static int lmi_flash_erase(struct target_flash *f, target_addr addr, size_t len)
{
target *t = f->t;
target_check_error(t);
while(len) {
while (len) {
target_mem_write32(t, LMI_FLASH_FMA, addr);
target_mem_write32(t, LMI_FLASH_FMC,
LMI_FLASH_FMC_WRKEY | LMI_FLASH_FMC_ERASE);
while (target_mem_read32(t, LMI_FLASH_FMC) &
LMI_FLASH_FMC_ERASE);
target_mem_write32(t, LMI_FLASH_FMC, LMI_FLASH_FMC_WRKEY | LMI_FLASH_FMC_ERASE);
while (target_mem_read32(t, LMI_FLASH_FMC) & LMI_FLASH_FMC_ERASE)
continue;
if (target_check_error(t))
return -1;
@ -139,15 +140,16 @@ static int lmi_flash_write(struct target_flash *f,
target_addr dest, const void *src, size_t len)
{
target *t = f->t;
target_check_error(t);
target_mem_write(t, SRAM_BASE, lmi_flash_write_stub,
sizeof(lmi_flash_write_stub));
target_mem_write(t, SRAM_BASE, lmi_flash_write_stub, sizeof(lmi_flash_write_stub));
target_mem_write(t, STUB_BUFFER_BASE, src, len);
if (target_check_error(t))
return -1;
return cortexm_run_stub(t, SRAM_BASE, dest, STUB_BUFFER_BASE, len, 0);
}
static bool lmi_mass_erase(target *t)
{
return lmi_flash_erase(t->flash, t->flash->start, t->flash->length) == 0;
}