diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0050-Set-UART-routing-in-lowlevel_init.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0050-Set-UART-routing-in-lowlevel_init.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0050-Set-UART-routing-in-lowlevel_init.patch b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0050-Set-UART-routing-in-lowlevel_init.patch new file mode 100644 index 000000000..5a83ee467 --- /dev/null +++ b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0050-Set-UART-routing-in-lowlevel_init.patch @@ -0,0 +1,43 @@ +From 03487b1de06f1caa4e0bb0597da21f0690125bac Mon Sep 17 00:00:00 2001 +From: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +Date: Mon, 26 Apr 2021 13:32:29 -0700 +Subject: [PATCH] Set UART routing in lowlevel_init + +This commit sets the UART routing back to default in lowlevel_init +to prevent any data dropping from the physical host serial until +SOL service is activated. + +Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +--- + arch/arm/mach-aspeed/platform_g5.S | 8 ++++++++ + 1 file changed, 8 insertions(+) + +diff --git a/arch/arm/mach-aspeed/platform_g5.S b/arch/arm/mach-aspeed/platform_g5.S +index 2c8bf03b0eff..7c4722688f90 100644 +--- a/arch/arm/mach-aspeed/platform_g5.S ++++ b/arch/arm/mach-aspeed/platform_g5.S +@@ -111,6 +111,9 @@ + #include <config.h> + #include <version.h> + ++#define AST_LPC_BASE 0x1E789000 ++#define AST_LPC_HICRA (AST_LPC_BASE + 0x09C) ++ + /****************************************************************************** + r4 : return program counter + r5 : DDR speed timing table base address +@@ -2445,6 +2448,11 @@ spi_cbr_end: + orr r1, r1, r2 + str r1, [r0] + ++ /* set UART routing back to default */ ++ ldr r0, =AST_LPC_HICRA ++ ldr r1, =0x0 ++ str r1, [r0] ++ + ldr r0, =0x1e6e2008 @ Set Video ECLK phase + ldr r1, [r0] + ldr r2, =0x0ffffff3 +-- +2.17.1 + |