Some boards require specific configuration prior to booting the kernel.
For instance, our boards require shutting down the display to avoid
fading transitions before the drivers are reloaded by the kernel. This
could be facilitated by adding an extra hook during the os booting
process.

Signed-off-by: Gerard Salvatella <[email protected]>
---
 common/bootm_os.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/common/bootm_os.c b/common/bootm_os.c
index f4bd905909..1e7af56b64 100644
--- a/common/bootm_os.c
+++ b/common/bootm_os.c
@@ -505,9 +505,16 @@ __weak void arch_preboot_os(void)
        /* please define platform specific arch_preboot_os() */
 }

+/* Allow for board specific config before we boot */
+__weak void board_preboot_os(void)
+{
+       /* please define board specific board_preboot_os() */
+}
+
 int boot_selected_os(int argc, char * const argv[], int state,
                     bootm_headers_t *images, boot_os_fn *boot_fn)
 {
+       board_preboot_os();
        arch_preboot_os();
        boot_fn(state, argc, argv, images);

--
2.18.0


[Toradex Logo]<http://toradex.com>      Global Leader in ArmĀ®
Embedded Computer Modules

Choose 
Us<https://www.toradex.com/how-to-choose-system-computer-on-module-partner> | 
Products<https://www.toradex.com/products> | Developer 
Center<http://developer.toradex.com/> | 
Community<https://www.toradex.com/community> | 
Careers<https://careers.toradex.com/>
Meet our engineers 
at<https://www.toradex.com/events>:<https://www.toradex.com/events>
- Linux Developer Conference, Brazil, Aug 25-26, 2018
- NXP Technology Days 2018, United States, Aug 28, 2018
- IoT Latin America, Brazil, Aug 29-30, 2018


_______________________________________________
U-Boot mailing list
[email protected]
https://lists.denx.de/listinfo/u-boot

Reply via email to