[PATCH 2/2] cmd: fuse: Add a command to read fuses to memory

[Angus Ainslie]

Are there any problems with this patch ?

Thanks
Angus

On 2021-11-28 08:02, Angus Ainslie wrote:
> With the fuse values in memory we can use some of the other u-boot 
> shell
> conditonal operators to do tests.
> 
> Signed-off-by: Angus Ainslie <angus at akkea.ca>
> ---
>  cmd/fuse.c | 27 +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/cmd/fuse.c b/cmd/fuse.c
> index 78b1065d99e..0676bb7a812 100644
> --- a/cmd/fuse.c
> +++ b/cmd/fuse.c
> @@ -12,6 +12,7 @@
>  #include <command.h>
>  #include <console.h>
>  #include <fuse.h>
> +#include <mapmem.h>
>  #include <linux/errno.h>
> 
>  static int strtou32(const char *str, unsigned int base, u32 *result)
> @@ -46,6 +47,8 @@ static int do_fuse(struct cmd_tbl *cmdtp, int flag, 
> int argc,
>  	const char *op = argc >= 2 ? argv[1] : NULL;
>  	int confirmed = argc >= 3 && !strcmp(argv[2], "-y");
>  	u32 bank, word, cnt, val, cmp;
> +	ulong addr;
> +	void *buf, *start;
>  	int ret, i;
> 
>  	argc -= 2 + confirmed;
> @@ -73,6 +76,28 @@ static int do_fuse(struct cmd_tbl *cmdtp, int flag, 
> int argc,
>  			printf(" %.8x", val);
>  		}
>  		putc('\n');
> +	} else if (!strcmp(op, "readm")) {
> +		if (argc == 3)
> +			cnt = 1;
> +		else if (argc != 4 || strtou32(argv[3], 0, &cnt))
> +			return CMD_RET_USAGE;
> +
> +		addr = simple_strtoul(argv[2], NULL, 16);
> +
> +		start = map_sysmem(addr, 4);
> +		buf = start;
> +
> +		printf("Reading bank %u len %u to 0x%lx\n", bank, cnt, addr);
> +		for (i = 0; i < cnt; i++, word++) {
> +			ret = fuse_read(bank, word, &val);
> +			if (ret)
> +				goto err;
> +
> +			*((u32 *)buf) = val;
> +			buf += 4;
> +		}
> +
> +		unmap_sysmem(start);
>  	} else if (!strcmp(op, "cmp")) {
>  		if (argc != 3 || strtou32(argv[2], 0, &cmp))
>  			return CMD_RET_USAGE;
> @@ -157,6 +182,8 @@ U_BOOT_CMD(
>  	"    starting at 'word'\n"
>  	"fuse cmp <bank> <word> <hexval> - compare 'hexval' to fuse\n"
>  	"    at 'word'\n"
> +	"fuse readm <bank> <word> <addr> [<cnt>] - read 1 or 'cnt' fuse 
> words,\n"
> +	"    starting at 'word' into memory at 'addr'\n"
>  	"fuse sense <bank> <word> [<cnt>] - sense 1 or 'cnt' fuse words,\n"
>  	"    starting at 'word'\n"
>  	"fuse prog [-y] <bank> <word> <hexval> [<hexval>...] - program 1 
> or\n"