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hw/sd: sd: Skip write protect groups check in sd_erase() for high capacity cards 

High capacity cards don't support write protection hence we should
not perform the write protect groups check in sd_erase() for them.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210216150225.27996-6-bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Bin Meng 2021-02-16 23:02:22 +08:00 committed by Philippe Mathieu-Daudé
parent ce6ea2efc5
commit 2473dc4022
1 changed files with 12 additions and 6 deletions
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18
hw/sd/sd.c
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@ -765,6 +765,7 @@ static void sd_erase(SDState *sd)
int i;
uint64_t erase_start = sd->erase_start;
uint64_t erase_end = sd->erase_end;
bool sdsc = true;
trace_sdcard_erase(sd->erase_start, sd->erase_end);
if (sd->erase_start == INVALID_ADDRESS
@ -779,6 +780,7 @@ static void sd_erase(SDState *sd)
/* High capacity memory card: erase units are 512 byte blocks */
erase_start *= 512;
erase_end *= 512;
sdsc = false;
}
if (erase_start > sd->size || erase_end > sd->size) {
@ -788,16 +790,20 @@ static void sd_erase(SDState *sd)
return;
}
erase_start = sd_addr_to_wpnum(erase_start);
erase_end = sd_addr_to_wpnum(erase_end);
sd->erase_start = INVALID_ADDRESS;
sd->erase_end = INVALID_ADDRESS;
sd->csd[14] |= 0x40;
for (i = erase_start; i <= erase_end; i++) {
assert(i < sd->wpgrps_size);
if (test_bit(i, sd->wp_groups)) {
sd->card_status |= WP_ERASE_SKIP;
/* Only SDSC cards support write protect groups */
if (sdsc) {
erase_start = sd_addr_to_wpnum(erase_start);
erase_end = sd_addr_to_wpnum(erase_end);
for (i = erase_start; i <= erase_end; i++) {
assert(i < sd->wpgrps_size);
if (test_bit(i, sd->wp_groups)) {
sd->card_status |= WP_ERASE_SKIP;
}
}
}
}