Avoid hardcoding 1MiB boot size in EXT_CSD_BOOT_MULT,
expose it as 'boot-partition-size' QOM property.
By default, do not use any size. The board is responsible
to set the boot partition size property.
Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Tested-by: Cédric Le Goater <c...@redhat.com>
Message-Id: <20240712162719.88165-10-phi...@linaro.org>
---
hw/sd/sd.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 2246213b31..d49b144214 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -135,6 +135,7 @@ struct SDState {
/* Static properties */
uint8_t spec_version;
+ uint64_t boot_part_size;
BlockBackend *blk;
const SDProto *proto;
@@ -492,7 +493,8 @@ static void emmc_set_ext_csd(SDState *sd, uint64_t size)
/* Properties segment (RO) */
sd->ext_csd[EXT_CSD_S_CMD_SET] = 0b1; /* supported command sets */
sd->ext_csd[EXT_CSD_BOOT_INFO] = 0x0; /* Boot information */
- sd->ext_csd[EXT_CSD_BOOT_MULT] = 0x8; /* Boot partition size. 128KB unit */
+ /* Boot partition size. 128KB unit */
+ sd->ext_csd[EXT_CSD_BOOT_MULT] = sd->boot_part_size / (128 * KiB);
sd->ext_csd[EXT_CSD_ACC_SIZE] = 0x1; /* Access size */
sd->ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] = 0x01; /* HC Erase unit size */
sd->ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT] = 0x01; /* HC erase timeout */
@@ -2704,6 +2706,7 @@ static Property sd_properties[] = {
};
static Property emmc_properties[] = {
+ DEFINE_PROP_UINT64("boot-partition-size", SDState, boot_part_size, 0),
DEFINE_PROP_END_OF_LIST()
};
--
2.41.0
