diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0028-Enabling-uart1-uart2-in-u-boot-for-BIOS-messages.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0028-Enabling-uart1-uart2-in-u-boot-for-BIOS-messages.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0028-Enabling-uart1-uart2-in-u-boot-for-BIOS-messages.patch b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0028-Enabling-uart1-uart2-in-u-boot-for-BIOS-messages.patch new file mode 100644 index 000000000..129b6be88 --- /dev/null +++ b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0028-Enabling-uart1-uart2-in-u-boot-for-BIOS-messages.patch @@ -0,0 +1,61 @@ +From 8c2a3f6489c86d8dae57cae03d617de2296774ab Mon Sep 17 00:00:00 2001 +From: AppaRao Puli <apparao.puli@linux.intel.com> +Date: Mon, 13 May 2019 23:49:02 +0530 +Subject: [PATCH] Enabling uart1&uart2 in u-boot for BIOS messages + +Added uart init function in u-boot aspeed code +to enable uart1 and uart2 for BIOS serial messages. + +Tested: +Forced BMC to stop in u-boot( using Force Firmware Update +Jumper), AC cycled system for multiple times, booted system +to uefi, checked bios serial logs working fine and accessed +keyboard in uefi without any issues. + +Signed-off-by: AppaRao Puli <apparao.puli@linux.intel.com> +--- + board/aspeed/ast-g5/ast-g5-intel.c | 21 +++++++++++++++++++++ + 1 file changed, 21 insertions(+) + +diff --git a/board/aspeed/ast-g5/ast-g5-intel.c b/board/aspeed/ast-g5/ast-g5-intel.c +index 6ea7f0060c57..5196a1a41299 100644 +--- a/board/aspeed/ast-g5/ast-g5-intel.c ++++ b/board/aspeed/ast-g5/ast-g5-intel.c +@@ -509,6 +509,26 @@ void board_pre_abort_autoboot(void) + { + } + ++static void uart_init(void) ++{ ++ u32 val; ++ ++ /* Enable UART1 and UART2 for BIOS messages */ ++ val = ast_scu_read(AST_SCU_FUN_PIN_CTRL2); ++ ++ /* UART1 */ ++ val |= (SCU_FUN_PIN_UART1_NCTS | SCU_FUN_PIN_UART1_NDCD | ++ SCU_FUN_PIN_UART1_NDSR | SCU_FUN_PIN_UART1_NRI | ++ SCU_FUN_PIN_UART1_NDTR | SCU_FUN_PIN_UART1_NRTS | ++ SCU_FUN_PIN_UART1_TXD | SCU_FUN_PIN_UART1_RXD); ++ /* UART2 */ ++ val |= (SCU_FUN_PIN_UART2_NCTS | SCU_FUN_PIN_UART2_NDCD | ++ SCU_FUN_PIN_UART2_NDSR | SCU_FUN_PIN_UART2_NRI | ++ SCU_FUN_PIN_UART2_NDTR | SCU_FUN_PIN_UART2_NRTS | ++ SCU_FUN_PIN_UART2_TXD | SCU_FUN_PIN_UART2_RXD); ++ ast_scu_write(val, AST_SCU_FUN_PIN_CTRL2); ++} ++ + static void pwm_init(void) + { + uint32_t val; +@@ -560,6 +580,7 @@ extern void espi_init(void); + extern void kcs_init(void); + void ast_g5_intel(void) + { ++ uart_init(); + pwm_init(); + gpio_init(gpio_table, ARRAY_SIZE(gpio_table)); + espi_init(); +-- +2.17.1 + |