[PATCH] Expose active mmc boot partition to scripts

[PATCH] Expose active mmc boot partition to scripts

[Reuben Dowle]

This patch allows uboot scripts make choices about where to boot from based on 
the active mmc boot partition. This allows having two copies of kernel, 
filesystems etc, and choosing which to boot from based off the active 
bootloader partition.

Signed-off-by: Reuben Dowle <reuben.dowle@4rf.com>
---
 cmd/mmc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmd/mmc.c b/cmd/mmc.c
index 1529a3e..88de0c4 100644
--- a/cmd/mmc.c
+++ b/cmd/mmc.c
@@ -784,6 +784,8 @@ static int mmc_partconf_print(struct mmc *mmc)
 	ack = EXT_CSD_EXTRACT_BOOT_ACK(mmc->part_config);
 	part = EXT_CSD_EXTRACT_BOOT_PART(mmc->part_config);
 
+	env_set_hex("activepart", part);
+
 	printf("EXT_CSD[179], PARTITION_CONFIG:\n"
 		"BOOT_ACK: 0x%x\n"
 		"BOOT_PARTITION_ENABLE: 0x%x\n"
-- 
2.7.4

[PATCH] Expose active mmc boot partition to scripts

[Tom Rini]

On Tue, Sep 01, 2020 at 10:01:18PM +0000, Reuben Dowle wrote:

> This patch allows uboot scripts make choices about where to boot from based on 
> the active mmc boot partition. This allows having two copies of kernel, 
> filesystems etc, and choosing which to boot from based off the active 
> bootloader partition.
> 
> Signed-off-by: Reuben Dowle <reuben.dowle@4rf.com>
> ---
>  cmd/mmc.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/cmd/mmc.c b/cmd/mmc.c
> index 1529a3e..88de0c4 100644
> --- a/cmd/mmc.c
> +++ b/cmd/mmc.c
> @@ -784,6 +784,8 @@ static int mmc_partconf_print(struct mmc *mmc)
>  	ack = EXT_CSD_EXTRACT_BOOT_ACK(mmc->part_config);
>  	part = EXT_CSD_EXTRACT_BOOT_PART(mmc->part_config);
>  
> +	env_set_hex("activepart", part);
> +
>  	printf("EXT_CSD[179], PARTITION_CONFIG:\n"
>  		"BOOT_ACK: 0x%x\n"
>  		"BOOT_PARTITION_ENABLE: 0x%x\n"

Rather than hard-code a variable here I would like to see this work like
similar commands that take the variable to place the value in to as an
argument, thanks!

-- 
Tom
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