From 447f8b018e5e5bc5b6958ce6ed8f79e8c35c30af Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Tue, 27 Jan 2015 22:13:42 -0700 Subject: [PATCH] x86: Allow a UART to be set up before the FSP is ready Since the FSP is a black box it helps to have some sort of debugging available to check its inputs. If the debug UART is in use, set it up after CAR is available. Signed-off-by: Simon Glass Reviewed-by: Bin Meng --- arch/x86/include/asm/u-boot-x86.h | 3 +++ arch/x86/lib/fsp/fsp_support.c | 4 ++++ 2 files changed, 7 insertions(+) diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h index b98afa801d..5d7dff534d 100644 --- a/arch/x86/include/asm/u-boot-x86.h +++ b/arch/x86/include/asm/u-boot-x86.h @@ -45,6 +45,9 @@ ulong board_get_usable_ram_top(ulong total_size); void dram_init_banksize(void); int default_print_cpuinfo(void); +/* Set up a UART which can be used with printch(), printhex8(), etc. */ +int setup_early_uart(void); + void setup_pcat_compatibility(void); void isa_unmap_rom(u32 addr); diff --git a/arch/x86/lib/fsp/fsp_support.c b/arch/x86/lib/fsp/fsp_support.c index 8b639f7819..5f96da120e 100644 --- a/arch/x86/lib/fsp/fsp_support.c +++ b/arch/x86/lib/fsp/fsp_support.c @@ -124,6 +124,10 @@ void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf) struct fsp_init_params *params_ptr; struct upd_region *fsp_upd; +#ifdef CONFIG_DEBUG_UART + setup_early_uart(); +#endif + fsp_hdr = find_fsp_header(); if (fsp_hdr == NULL) { /* No valid FSP info header was found */ -- 2.30.2