From patchwork Tue May 1 21:09:45 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 156237 X-Patchwork-Delegate: sbabic@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id F3BDEB6FAC for ; Wed, 2 May 2012 07:10:56 +1000 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 269C02816F; Tue, 1 May 2012 23:10:45 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qUcL0+jVQZMJ; Tue, 1 May 2012 23:10:44 +0200 (CEST) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 2F0692818B; Tue, 1 May 2012 23:10:14 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 74BF028145 for ; Tue, 1 May 2012 23:10:07 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id iVeWzBJ76Wdu for ; Tue, 1 May 2012 23:10:06 +0200 (CEST) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.9]) by theia.denx.de (Postfix) with ESMTPS id EBA802811E for ; Tue, 1 May 2012 23:10:05 +0200 (CEST) Received: from frontend1.mail.m-online.net (unknown [192.168.8.180]) by mail-out.m-online.net (Postfix) with ESMTP id 3VhwHc5TXxz4Kh2q; Tue, 1 May 2012 23:10:04 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.8.164]) by mail.m-online.net (Postfix) with ESMTP id 3VhwHc56Wwz4KK4C; Tue, 1 May 2012 23:10:04 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from smtp-auth.mnet-online.de ([192.168.8.180]) by localhost (dynscan1.mail.m-online.net [192.168.8.164]) (amavisd-new, port 10024) with ESMTP id d0BA8fb8b17p; Tue, 1 May 2012 23:10:04 +0200 (CEST) Received: from mashiro.lan (unknown [195.140.253.167]) by smtp-auth.mnet-online.de (Postfix) with ESMTPA; Tue, 1 May 2012 23:10:04 +0200 (CEST) From: Marek Vasut To: u-boot@lists.denx.de Date: Tue, 1 May 2012 23:09:45 +0200 Message-Id: <1335906593-25183-6-git-send-email-marex@denx.de> X-Mailer: git-send-email 1.7.10 In-Reply-To: <1335906593-25183-1-git-send-email-marex@denx.de> References: <1335906593-25183-1-git-send-email-marex@denx.de> Cc: Marek Vasut , Fabio Estevam Subject: [U-Boot] [PATCH 05/13] i.MX28: Implement boot pads sampling and reporting X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.11 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de This patch implements code that samples i.MX28 boot pads and reports boot mode accordingly. Signed-off-by: Marek Vasut Cc: Detlev Zundel Cc: Fabio Estevam Cc: Stefano Babic Cc: Wolfgang Denk --- arch/arm/cpu/arm926ejs/mx28/mx28.c | 4 +++ arch/arm/cpu/arm926ejs/mx28/spl_boot.c | 48 ++++++++++++++++++++++++++++ arch/arm/include/asm/arch-mx28/sys_proto.h | 26 +++++++++++++++ include/configs/m28evk.h | 1 + include/configs/mx28evk.h | 1 + 5 files changed, 80 insertions(+) diff --git a/arch/arm/cpu/arm926ejs/mx28/mx28.c b/arch/arm/cpu/arm926ejs/mx28/mx28.c index 54a68e1..865dbb3 100644 --- a/arch/arm/cpu/arm926ejs/mx28/mx28.c +++ b/arch/arm/cpu/arm926ejs/mx28/mx28.c @@ -185,8 +185,12 @@ int arch_cpu_init(void) #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo(void) { + struct mx28_spl_data *data = (struct mx28_spl_data *) + ((CONFIG_SYS_TEXT_BASE - sizeof(struct mx28_spl_data)) & ~0xf); + printf("Freescale i.MX28 family at %d MHz\n", mxc_get_clock(MXC_ARM_CLK) / 1000000); + printf("BOOT: %s\n", mx28_boot_modes[data->boot_mode_idx].mode); return 0; } #endif diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_boot.c b/arch/arm/cpu/arm926ejs/mx28/spl_boot.c index 37e1eb7..c9b4566 100644 --- a/arch/arm/cpu/arm926ejs/mx28/spl_boot.c +++ b/arch/arm/cpu/arm926ejs/mx28/spl_boot.c @@ -29,6 +29,7 @@ #include #include #include +#include #include "mx28_init.h" @@ -47,11 +48,56 @@ void early_delay(int delay) ; } +#define MUX_CONFIG_BOOTMODE_PAD (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL) +const iomux_cfg_t iomux_boot[] = { + MX28_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_BOOTMODE_PAD, + MX28_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_BOOTMODE_PAD, + MX28_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_BOOTMODE_PAD, + MX28_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_BOOTMODE_PAD, + MX28_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_BOOTMODE_PAD, + MX28_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_BOOTMODE_PAD, +}; + +uint8_t mx28_get_bootmode_index(void) +{ + uint8_t bootmode = 0; + int i; + uint8_t masked; + + /* Setup IOMUX of bootmode pads to GPIO */ + mxs_iomux_setup_multiple_pads(iomux_boot, ARRAY_SIZE(iomux_boot)); + + /* Setup bootmode pins as GPIO input */ + gpio_direction_input(MX28_PAD_LCD_D00__GPIO_1_0); + gpio_direction_input(MX28_PAD_LCD_D01__GPIO_1_1); + gpio_direction_input(MX28_PAD_LCD_D02__GPIO_1_2); + gpio_direction_input(MX28_PAD_LCD_D03__GPIO_1_3); + gpio_direction_input(MX28_PAD_LCD_D04__GPIO_1_4); + gpio_direction_input(MX28_PAD_LCD_D05__GPIO_1_5); + + /* Read bootmode pads */ + bootmode |= (gpio_get_value(MX28_PAD_LCD_D00__GPIO_1_0) ? 1 : 0) << 0; + bootmode |= (gpio_get_value(MX28_PAD_LCD_D01__GPIO_1_1) ? 1 : 0) << 1; + bootmode |= (gpio_get_value(MX28_PAD_LCD_D02__GPIO_1_2) ? 1 : 0) << 2; + bootmode |= (gpio_get_value(MX28_PAD_LCD_D03__GPIO_1_3) ? 1 : 0) << 3; + bootmode |= (gpio_get_value(MX28_PAD_LCD_D04__GPIO_1_4) ? 1 : 0) << 4; + bootmode |= (gpio_get_value(MX28_PAD_LCD_D05__GPIO_1_5) ? 1 : 0) << 5; + + for (i = 0; i < ARRAY_SIZE(mx28_boot_modes); i++) { + masked = bootmode & mx28_boot_modes[i].boot_mask; + if (masked == mx28_boot_modes[i].boot_pads) + break; + } + + return i; +} + void mx28_common_spl_init(const iomux_cfg_t *iomux_setup, const unsigned int iomux_size) { struct mx28_spl_data *data = (struct mx28_spl_data *) ((CONFIG_SYS_TEXT_BASE - sizeof(struct mx28_spl_data)) & ~0xf); + uint8_t bootmode = mx28_get_bootmode_index(); mxs_iomux_setup_multiple_pads(iomux_setup, iomux_size); mx28_power_init(); @@ -59,6 +105,8 @@ void mx28_common_spl_init(const iomux_cfg_t *iomux_setup, mx28_mem_init(); data->mem_dram_size = mx28_mem_get_size(); + data->boot_mode_idx = bootmode; + mx28_power_wait_pswitch(); } diff --git a/arch/arm/include/asm/arch-mx28/sys_proto.h b/arch/arm/include/asm/arch-mx28/sys_proto.h index 04f2e4d..e701c64 100644 --- a/arch/arm/include/asm/arch-mx28/sys_proto.h +++ b/arch/arm/include/asm/arch-mx28/sys_proto.h @@ -39,7 +39,33 @@ void mx28_common_spl_init(const iomux_cfg_t *iomux_setup, const unsigned int iomux_size); #endif +struct mx28_pair { + uint8_t boot_pads; + uint8_t boot_mask; + const char *mode; +}; + +static const struct mx28_pair mx28_boot_modes[] = { + { 0x00, 0x0f, "USB #0" }, + { 0x01, 0x1f, "I2C #0, master, 3V3" }, + { 0x11, 0x1f, "I2C #0, master, 1V8" }, + { 0x02, 0x1f, "SSP SPI #2, master, 3V3 NOR" }, + { 0x12, 0x1f, "SSP SPI #2, master, 1V8 NOR" }, + { 0x03, 0x1f, "SSP SPI #3, master, 3V3 NOR" }, + { 0x13, 0x1f, "SSP SPI #3, master, 1V8 NOR" }, + { 0x04, 0x1f, "NAND, 3V3" }, + { 0x14, 0x1f, "NAND, 1V8" }, + { 0x08, 0x1f, "SSP SPI #3, master, 3V3 EEPROM" }, + { 0x18, 0x1f, "SSP SPI #3, master, 1V8 EEPROM" }, + { 0x09, 0x1f, "SSP SD/MMC #0, 3V3" }, + { 0x19, 0x1f, "SSP SD/MMC #0, 1V8" }, + { 0x0a, 0x1f, "SSP SD/MMC #1, 3V3" }, + { 0x1a, 0x1f, "SSP SD/MMC #1, 1V8" }, + { 0x00, 0x00, "Reserved/Unknown/Wrong" }, +}; + struct mx28_spl_data { + uint8_t boot_mode_idx; uint32_t mem_dram_size; }; diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h index c40d2a8..12059db 100644 --- a/include/configs/m28evk.h +++ b/include/configs/m28evk.h @@ -52,6 +52,7 @@ #define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/arm926ejs/mx28/u-boot-spl.lds" #define CONFIG_SPL_LIBCOMMON_SUPPORT #define CONFIG_SPL_LIBGENERIC_SUPPORT +#define CONFIG_SPL_GPIO_SUPPORT /* * U-Boot Commands diff --git a/include/configs/mx28evk.h b/include/configs/mx28evk.h index 02f3366..0984d70 100644 --- a/include/configs/mx28evk.h +++ b/include/configs/mx28evk.h @@ -46,6 +46,7 @@ #define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/arm926ejs/mx28/u-boot-spl.lds" #define CONFIG_SPL_LIBCOMMON_SUPPORT #define CONFIG_SPL_LIBGENERIC_SUPPORT +#define CONFIG_SPL_GPIO_SUPPORT /* * U-Boot Commands