This patch takes a given address applies a plus or minus offset to locate
the putative address of an IVT given a non-IVT link location.
It then sets hab_ivt_address to allow for further logic/scripting based on
the calculated address.
This routine is useful when scripting hab_auth_img calls from boot.scr.
Subsequent patches will illustrate its utility in a board-port.
Signed-off-by: Bryan O'Donoghue <bryan.odonog...@linaro.org>
Cc: Utkarsh Gupta <utkarsh.gu...@nxp.com>
Cc: Breno Lima <breno.l...@nxp.com>
Cc: Fabio Estevam <fabio.este...@nxp.com>
---
arch/arm/mach-imx/hab.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/arch/arm/mach-imx/hab.c b/arch/arm/mach-imx/hab.c
index c730c8f..0c18b2e 100644
--- a/arch/arm/mach-imx/hab.c
+++ b/arch/arm/mach-imx/hab.c
@@ -341,6 +341,31 @@ static int do_hab_failsafe(cmd_tbl_t *cmdtp, int flag, int
argc,
return 0;
}
+/*
+ * This routine takes a given address and applies a plus or minus offset to
that
+ * address.
+ */
+static int do_hab_get_ivt_addr(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ ulong addr;
+ long ivt_offset;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ if (!imx_hab_is_enabled())
+ return CMD_RET_FAILURE;
+
+ addr = simple_strtoul(argv[1], NULL, 16);
+ ivt_offset = simple_strtol(argv[2], NULL, 16);
+ addr += ivt_offset;
+
+ env_set_hex("hab_ivt_addr", addr);
+
+ return CMD_RET_SUCCESS;
+}
+
U_BOOT_CMD(
hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status,
"display HAB status",
@@ -362,6 +387,14 @@ U_BOOT_CMD(
""
);
+U_BOOT_CMD(
+ hab_get_ivt_addr, 3, 0, do_hab_get_ivt_addr,
+ "determine IVT header location and store in $hab_ivt_addr",
+ "addr ivt_offset\n"
+ "addr - image hex address\n"
+ "ivt_offset - hex offset of IVT in the image"
+ );
+
#endif /* !defined(CONFIG_SPL_BUILD) */
/* Get CSF Header length */
--
2.7.4
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