From afa07f7ae48d9e9d79aef712933777a56551f5be Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Thu, 24 May 2018 12:21:06 +0530 Subject: soc/intel/common/block: Move common uart function to block/uart This patch moves uart functions which are common across multiple soc to block/uart. This will remove redundant code copy from soc {skylake/apollolake/cannonlake}. BUG=b:78109109 BRANCH=none TEST=Build and boot on KBL/APL/CNL platform. Change-Id: I109d0e5c942e499cb763bde47cb7d53dfbf5cef6 Signed-off-by: Maulik V Vaghela Signed-off-by: Subrata Banik Reviewed-on: https://review.coreboot.org/26164 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh --- src/soc/intel/cannonlake/uart.c | 125 +++++++++++++--------------------------- 1 file changed, 41 insertions(+), 84 deletions(-) (limited to 'src/soc/intel/cannonlake/uart.c') diff --git a/src/soc/intel/cannonlake/uart.c b/src/soc/intel/cannonlake/uart.c index 80404100fe..d03d21e3c1 100644 --- a/src/soc/intel/cannonlake/uart.c +++ b/src/soc/intel/cannonlake/uart.c @@ -1,7 +1,7 @@ /* * This file is part of the coreboot project. * - * Copyright (C) 2017 Intel Corporation + * Copyright (C) 2017-2018 Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -14,116 +14,73 @@ */ #include -#include -#include -#include #include #include #include #include #include #include -#include #include #include #include +#include -#if !ENV_RAMSTAGE /* Serial IO UART controller legacy mode */ #define PCR_SERIAL_IO_GPPRVRW7 0x618 #define PCR_SIO_PCH_LEGACY_UART(idx) (1 << (idx)) -static const struct port { - struct pad_config pads[2]; /* just TX and RX */ -#if defined(__SIMPLE_DEVICE__) - pci_devfn_t dev; -#else - struct device *dev; -#endif -} uart_ports[] = { - {.dev = PCH_DEV_UART0, - .pads = { PAD_CFG_NF(GPP_C8, NONE, DEEP, NF1), /* RX */ - PAD_CFG_NF(GPP_C9, NONE, DEEP, NF1)} /* TX */ +const struct uart_gpio_pad_config uart_gpio_pads[] = { + { + .console_index = 0, + .gpios = { + PAD_CFG_NF(GPP_C8, NONE, DEEP, NF1), /* UART0 RX */ + PAD_CFG_NF(GPP_C9, NONE, DEEP, NF1), /* UART0 TX */ + }, }, - {.dev = PCH_DEV_UART1, - .pads = { PAD_CFG_NF(GPP_C12, NONE, DEEP, NF1), /* RX */ - PAD_CFG_NF(GPP_C13, NONE, DEEP, NF1)} /* TX */ + { + .console_index = 1, + .gpios = { + PAD_CFG_NF(GPP_C12, NONE, DEEP, NF1), /* UART1 RX */ + PAD_CFG_NF(GPP_C13, NONE, DEEP, NF1), /* UART1 TX */ + }, }, - {.dev = PCH_DEV_UART2, - .pads = { PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), /* RX */ - PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1)} /* TX */ + { + .console_index = 2, + .gpios = { + PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), /* UART2 RX */ + PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1), /* UART2 TX */ + }, } }; -void pch_uart_init(void) -{ - uintptr_t base; - const struct port *p; - - assert(CONFIG_UART_FOR_CONSOLE < ARRAY_SIZE(uart_ports)); - p = &uart_ports[CONFIG_UART_FOR_CONSOLE]; - base = uart_platform_base(CONFIG_UART_FOR_CONSOLE); - - uart_common_init(p->dev, base); +const int uart_max_index = ARRAY_SIZE(uart_gpio_pads); - /* Put UART2 in byte access mode for 16550 compatibility */ - if (!IS_ENABLED(CONFIG_DRIVERS_UART_8250MEM_32)) { - pcr_write32(PID_SERIALIO, PCR_SERIAL_IO_GPPRVRW7, - PCR_SIO_PCH_LEGACY_UART(CONFIG_UART_FOR_CONSOLE)); - - /* - * Dummy read after setting any of GPPRVRW7. - * Required for UART 16550 8-bit Legacy mode to become active - */ - lpss_clk_read(base); - } - - gpio_configure_pads(p->pads, ARRAY_SIZE(p->pads)); -} -#endif - -#if IS_ENABLED(CONFIG_DRIVERS_UART_8250MEM) -uintptr_t uart_platform_base(int idx) +void soc_uart_set_legacy_mode(void) { - /* We can only have one serial console at a time */ - return UART_BASE_0_ADDR(idx); + pcr_write32(PID_SERIALIO, PCR_SERIAL_IO_GPPRVRW7, + PCR_SIO_PCH_LEGACY_UART(CONFIG_UART_FOR_CONSOLE)); + /* + * Dummy read after setting any of GPPRVRW7. + * Required for UART 16550 8-bit Legacy mode to become active + */ + lpss_clk_read(UART_BASE(CONFIG_UART_FOR_CONSOLE)); } -#endif -device_t pch_uart_get_debug_controller(void) +struct device *soc_uart_console_to_device(int uart_console) { - switch (CONFIG_UART_FOR_CONSOLE) { + /* + * if index is valid, this function will return corresponding structure + * for uart console else will return NULL. + */ + switch (uart_console) { case 0: - return PCH_DEV_UART0; + return (struct device *)PCH_DEV_UART0; case 1: - return PCH_DEV_UART1; + return (struct device *)PCH_DEV_UART1; case 2: + return (struct device *)PCH_DEV_UART2; default: - return PCH_DEV_UART2; - } -} - -void pch_uart_read_resources(struct device *dev) -{ - pci_dev_read_resources(dev); - - /* Set the configured UART base address for the debug port */ - if (IS_ENABLED(CONFIG_UART_DEBUG) && uart_is_debug_controller(dev)) { - struct resource *res = find_resource(dev, PCI_BASE_ADDRESS_0); - /* Need to set the base and size for the resource allocator. */ - res->base = UART_BASE_0_ADDR(CONFIG_UART_FOR_CONSOLE); - res->size = UART_DEBUG_BASE_0_SIZE; - res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | - IORESOURCE_FIXED; + printk(BIOS_ERR, "Invalid UART console index\n"); + return NULL; } } - -bool pch_uart_init_debug_controller_on_resume(void) -{ - global_nvs_t *gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); - - if (gnvs) - return !!gnvs->uior; - - return false; -} -- cgit v1.2.3