AArch32: Add `TRUSTED_BOARD_BOOT` support
This patch adds `TRUSTED_BOARD_BOOT` support for AArch32 mode.
To build this patch the "mbedtls/include/mbedtls/bignum.h"
needs to be modified to remove `#define MBEDTLS_HAVE_UDBL`
when `MBEDTLS_HAVE_INT32` is defined. This is a workaround
for "https://github.com/ARMmbed/mbedtls/issues/708"
NOTE: TBBR support on Juno AArch32 is not currently supported.
Change-Id: I86d80e30b9139adc4d9663f112801ece42deafcf
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
Co-Authored-By: Yatharth Kochar <yatharth.kochar@arm.com>
diff --git a/bl1/bl1_main.c b/bl1/bl1_main.c
index 71ece00..fa4f3a4 100644
--- a/bl1/bl1_main.c
+++ b/bl1/bl1_main.c
@@ -279,3 +279,20 @@
WARN("Unimplemented BL1 SMC Call: 0x%x \n", smc_fid);
SMC_RET1(handle, SMC_UNK);
}
+
+/*******************************************************************************
+ * BL1 SMC wrapper. This function is only used in AArch32 mode to ensure ABI
+ * compliance when invoking bl1_smc_handler.
+ ******************************************************************************/
+register_t bl1_smc_wrapper(uint32_t smc_fid,
+ void *cookie,
+ void *handle,
+ unsigned int flags)
+{
+ register_t x1, x2, x3, x4;
+
+ assert(handle);
+
+ get_smc_params_from_ctx(handle, x1, x2, x3, x4);
+ return bl1_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags);
+}