commit e47ccd63dfa133d71b54c8b73aeefab343c129f8
author Fabio Utzig <utzig@apache.org> Fri Oct 18 10:55:22 2019 -0300
committer Fabio Utzig <utzig@utzig.org> Mon Oct 21 17:21:27 2019 -0300
tree 0d908e86b20eb2efaa513f0c5d9eadbe42148ea1
parent e5ac82797fafafa727de788986fa83cd147667f6

mynewt: allow overriding the startup routine

Add a new Mynewt option that allows for overriding the default
`hal_system_start` routine; this allows for startup customizations
required by some BSPs.

Signed-off-by: Fabio Utzig <utzig@apache.org>

boot/mynewt/src/main.c

diff --git a/boot/mynewt/src/main.c b/boot/mynewt/src/main.c
index 8af06e5..6fc5c60 100755
--- a/boot/mynewt/src/main.c
+++ b/boot/mynewt/src/main.c
@@ -46,6 +46,10 @@
 #include "bootutil/bootutil.h"
 #include "bootutil/bootutil_log.h"
 
+#if MYNEWT_VAL(BOOT_CUSTOM_START)
+void boot_custom_start(uintptr_t flash_base, struct boot_rsp *rsp);
+#endif
+
 #if defined(MCUBOOT_SERIAL)
 #define BOOT_SERIAL_REPORT_DUR  \
     (MYNEWT_VAL(OS_CPUTIME_FREQ) / MYNEWT_VAL(BOOT_SERIAL_REPORT_FREQ))
@@ -239,8 +243,12 @@
     rc = flash_device_base(rsp.br_flash_dev_id, &flash_base);
     assert(rc == 0);
 
+#if MYNEWT_VAL(BOOT_CUSTOM_START)
+    boot_custom_start(flash_base, &rsp);
+#else
     hal_system_start((void *)(flash_base + rsp.br_image_off +
                               rsp.br_hdr->ih_hdr_size));
+#endif
 
     return 0;
 }

boot/mynewt/syscfg.yml

diff --git a/boot/mynewt/syscfg.yml b/boot/mynewt/syscfg.yml
index 3460954..d472c20 100644
--- a/boot/mynewt/syscfg.yml
+++ b/boot/mynewt/syscfg.yml
@@ -25,6 +25,9 @@
     BOOT_SERIAL:
         description: 'Support image upgrade over serial within bootloader'
         value: 0
+    BOOT_CUSTOM_START:
+        description: 'Override hal_system_start with a custom start routine'
+        value: 0
 
 syscfg.vals:
     SYSINIT_CONSTRAIN_INIT: 0