From ce011ec1317eebdcec91f29d206869ac0a71c23a Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Tue, 6 Aug 2013 16:00:37 -0700 Subject: exynos5250: Implement support to boot with USB A-A firmware upload This patch implements the basic infrastructure required to use the USB A-A firmware upload feature on Exynos5 processors with Coreboot. It will require a corresponding host-side script that activates the feature and uploads the correct image parts in the correct order to harcoded target addresses, as described in the comments of alternate_cbfs.c. Also fixes a bug in the Google Snow mainboard where it would not correctly initialize the pinmux configuration for the SPI flash bus. During a normal SPI boot the IROM would already do that for you, but when booting from USB you have to do it yourself. Change-Id: I40a39f8f5d1d70b58dbf258015c1653a27097d67 Signed-off-by: Julius Werner Reviewed-on: https://gerrit.chromium.org/gerrit/64875 Reviewed-by: Stefan Reinauer Reviewed-by: Hung-Te Lin Commit-Queue: Gabe Black Reviewed-on: http://review.coreboot.org/4456 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/arch/armv7/bootblock_simple.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'src/arch/armv7') diff --git a/src/arch/armv7/bootblock_simple.c b/src/arch/armv7/bootblock_simple.c index 541175cc8a..6ed63ce1d0 100644 --- a/src/arch/armv7/bootblock_simple.c +++ b/src/arch/armv7/bootblock_simple.c @@ -55,9 +55,6 @@ void main(void) /* * Re-enable icache and branch prediction. MMU and dcache will be * set up later. - * - * Note: If booting from USB, we need to disable branch prediction - * before copying from USB into RAM (FIXME: why?) */ sctlr = read_sctlr(); sctlr |= SCTLR_Z | SCTLR_I; -- cgit v1.2.3