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ARM: keystone2: Add support for parsing monitor header 

Given that boot monitor image is being generated to a specific target location
depending on the SoC and U-boot relies on addr_mon env variable to be aligned
with boot monitor target location. When ever the target address gets updated in
boot monitor, it is difficult to sync between u-boot and boot monitor and also
there is no way to update user that boot monitor image is updated.

To avoid this problem, boot monitor image is being generated with mkimage
header. Adding support in mon_install command for parsing this header.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Lokesh Vutla 2016-09-16 10:17:12 +05:30 committed by Tom Rini
parent 86e3ca1178
commit 5d21406516
1 changed files with 18 additions and 4 deletions
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22
arch/arm/mach-keystone/cmd_mon.c
View File

@ -9,14 +9,16 @@
#include <common.h>
#include <command.h>
#include <image.h>
#include <mach/mon.h>
asm(".arch_extension sec\n\t");
static int do_mon_install(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 addr, dpsc_base = 0x1E80000, freq;
u32 addr, dpsc_base = 0x1E80000, freq, load_addr, size;
int rcode = 0;
struct image_header *header;
if (argc < 2)
return CMD_RET_USAGE;
@ -25,9 +27,21 @@ static int do_mon_install(cmd_tbl_t *cmdtp, int flag, int argc,
addr = simple_strtoul(argv[1], NULL, 16);
rcode = mon_install(addr, dpsc_base, freq);
printf("## installed monitor, freq [%d], status %d\n",
freq, rcode);
header = (struct image_header *)addr;
if (image_get_magic(header) != IH_MAGIC) {
printf("## Please update monitor image\n");
return -EFAULT;
}
load_addr = image_get_load(header);
size = image_get_data_size(header);
memcpy((void *)load_addr, (void *)(addr + sizeof(struct image_header)),
size);
rcode = mon_install(load_addr, dpsc_base, freq);
printf("## installed monitor @ 0x%x, freq [%d], status %d\n",
load_addr, freq, rcode);
return 0;
}