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hw/sd/sdcard: Add eMMC 'boot-partition-size' property

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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 <philmd@linaro.org>
Tested-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20240712162719.88165-10-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2024-07-09 16:35:42 +02:00
parent a1e0461995
commit c3561ab624
1 changed files with 4 additions and 1 deletions
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5
hw/sd/sd.c
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@ -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()
};