【TINY4412】U-BOOT移植笔记：（18）eMMC启动U-BOOT
【TINY4412】U-BOOT移植笔记：（18）eMMC启动U-BOOT
宿主机 ： 虚拟机 Ubuntu 16.04 LTS / X64
目标板[底板]： Tiny4412SDK - 1506
目标板[核心板]： Tiny4412 - 1412
U-BOOT版本： 2017.03
交叉编译器： gcc-arm-none-eabi-5_4-2016q3
日期： 2017-6-25 12:54:27
作者： SY
简介
- 从SD卡启动U-BOOT时，需要使用烧录脚本将制定文件，烧录到SD卡特定的位置。芯片上电后，通过调用固化在ROM中的驱动，读取SD卡的文件，执行U-BOOT。
- eMMC就是一个带有控制器的
Nand Flash芯片，相比SD卡只有4根数据总线，eMMC拥有8条数据总线，数据传输速度更高！ - 类似于SD卡启动U-BOOT，我们只需要将文件，从SD卡拷贝到eMMC的制定位置，即可从eMMC启动U-BOOT
eMMC分区
| 分区 | 名称 | 描述 |
|---|---|---|
| 0x0 | No access to boot partition(default) | 不可访问分区 |
| 0x1 | R/W boot partition 1 | 读写引导分区1 |
| 0x2 | R/W boot partition 2 | 读写引导分区2 |
| 0x3 | R/W Replace Protect Memory Block(RPMB) | 读写重发保护存储器块 |
| 0x4 | Access to General Purpose Partition 1 | 访问通用分区 1 |
| 0x5 | Access to General Purpose Partition 2 | 访问通用分区 2 |
| 0x6 | Access to General Purpose Partition 3 | 访问通用分区 3 |
| 0x7 | Access to General Purpose Partition 4 | 访问通用分区 4 |
+ R/W boot partition 1/2：此分区主要是为了支持从 eMMC 启动系统而设计的。大小为：4MB
+ RPMB：在实际应用中，RPMB 分区通常用来保存安全相关的数据，例如指纹数据、安全支付相关的密钥等。大小为：512KB
+ General Purpose Partition 1/2/3/4：此区域则主要用于存储系统或者用户数据。
+ User Data Area： 此区域则主要用于存储系统或者用户数据。
移植
arch/arm/dts/exynos4412-tiny4412.dts
@@ -38,8 +38,9 @@
serial0 = "/serial@13800000";
console = "/serial@13800000";
- mmc0 = "/sdhci@12530000";
- mmc1 = "/dwmmc@12550000";
+ mmc2 = "/sdhci@12530000";
+ mmc4 = "/dwmmc@12550000";
+
};
serial@13800000 {
11 arch/arm/mach-exynos/clock_init_exynos4412.c
@@ -548,3 +548,14 @@ void system_clock_init(void)
while (readl(&clk->mux_stat_cpu) & MUX_STAT_CPU_CHANGING)
continue;
}
+
+/*
+ * Set clock divisor value for booting from EMMC.
+ * Set DWMMC channel-0 clk div to operate mmc0 device at 50MHz.
+ */
+void emmc_boot_clk_div_set(void)
+{
+ ; //clock already setting!
+}
+
+
7 board/samsung/tiny4412/tiny4412.c
@@ -31,6 +31,13 @@ static void board_gpio_init(void)
{
/* USB复位 */
gpio_request(EXYNOS4X12_GPIO_M24, "USB4604 Reset");
+
+ /* KEY */
+ gpio_request(EXYNOS4X12_GPIO_X32, "KEY 1");
+ gpio_request(EXYNOS4X12_GPIO_X33, "KEY 2");
+ gpio_request(EXYNOS4X12_GPIO_X34, "KEY 3");
+ gpio_request(EXYNOS4X12_GPIO_X35, "KEY 4");
+
}
int exynos_init(void)
View
1 drivers/usb/gadget/dwc2_udc_otg_phy.c
@@ -67,7 +67,6 @@ void otg_phy_init(struct dwc2_udc *dev)
else
writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)) |
CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
-
writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
| PHY_SW_RST0, &phy->rstcon);
udelay(10);
View
23 include/configs/tiny4412.h
@@ -14,7 +14,7 @@
/* High Level Configuration Options */
#define CONFIG_EXYNOS4412 1 /* which is a EXYNOS4412 SoC */
#define CONFIG_TINY4412 1 /* working with TINY4412 */
-
+#define CONFIG_SUPPORT_EMMC_BOOT 1 /* support u-boot in eMMC */
/* DEBUG UART */
#if ! defined(CONFIG_SPL_BUILD)
@@ -126,22 +126,23 @@
/*
* SD MMC layout:
- * +------------+------------------------------------------------------------+
- * | |
- * | | | | | |
- * | 512B | 8K(bl1) | 16k(bl2) | 16k(ENV) | 512k(u-boot) |
- * | | | | | |
- * | |
- * +------------+------------------------------------------------------------+
+ * +------------------------------------------------------------------------------------------+
+ * | |
+ * | | | | | | |
+ * | 512B | 8K(bl1) | 16k(bl2) | 1M(u-boot) | 92k(TZSW) | 16K(ENV) |
+ * | | | | | | |
+ * | |
+ * +------------------------------------------------------------------------------------------+
*
*/
#define CONFIG_ENV_IS_IN_MMC
-#define CONFIG_SYS_MMC_ENV_DEV 0
+#define CONFIG_SYS_MMC_ENV_DEV (4) /* Need match dts of mmc id */
#define CONFIG_ENV_SIZE (16 << 10) /* 16 KB */
-#define RESERVE_BLOCK_SIZE (512)
#define RESERVE_BLOCK_SIZE (0)
#define BL1_SIZE (8 << 10) /* 8K reserved for BL1*/
#define BL2_SIZE (16 << 10) /* 16K reserved for BL2 */
-#define CONFIG_ENV_OFFSET (RESERVE_BLOCK_SIZE + BL1_SIZE + BL2_SIZE)
+#define TZSW_SIZE (92 << 10) /* 92K tzsw size */
+#define CONFIG_ENV_OFFSET (RESERVE_BLOCK_SIZE + BL1_SIZE + BL2_SIZE + COPY_BL2_SIZE + TZSW_SIZE)
#define CONFIG_SPL_LDSCRIPT "board/samsung/common/exynos-uboot-spl.lds"
#define CONFIG_SPL_MAX_FOOTPRINT (14 * 1024)
@@ -150,7 +151,7 @@
/* U-Boot copy size from boot Media to DRAM.*/
#define COPY_BL2_SIZE 0x100000
-#define BL2_START_OFFSET ((CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)/512)
+#define BL2_START_OFFSET ((RESERVE_BLOCK_SIZE + BL1_SIZE + BL2_SIZE)/512)
#define BL2_SIZE_BLOC_COUNT (COPY_BL2_SIZE/512)
#endif /* __CONFIG_H */
View
84 sd_fuse/tiny4412/fast_fuse.sh.bkp
@@ -1,84 +0,0 @@
-#
-# Copyright (C) 2011 Samsung Electronics Co., Ltd.
-# http://www.samsung.com/
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-#
-####################################
-
-if [ -z $1 ]
-then
- echo "usage: ./sd_fusing.sh "
- exit 0
-fi
-
-if [ -b $1 ]
-then
- echo "$1 reader is identified."
-else
- echo "$1 is NOT identified."
- exit 0
-fi
-
-####################################
-#注意：使用eMMC作为存储设备时，需要设置
#define CONFIG_SYS_MMC_ENV_DEV (4)
#define RESERVE_BLOCK_SIZE (0)如果使用SD卡作为存储设备时，需要设置
#define CONFIG_SYS_MMC_ENV_DEV (2)
#define RESERVE_BLOCK_SIZE (512)综上所述：
#if (0)
#define CONFIG_SYS_MMC_ENV_DEV (2) /* Need match dts of mmc id */
#define RESERVE_BLOCK_SIZE (512)
#else
#define CONFIG_SYS_MMC_ENV_DEV (4) /* Need match dts of mmc id */
#define RESERVE_BLOCK_SIZE (0)
#endifmake生成烧录文件u-boot.bin、tiny4412-spl.bin，将这两个文件和E4412_N.bl1.bin、E4412_tzsw.bin拷贝到SD卡的FAT32分区
U-BOOT 拷贝
将SD卡插入开发板，拨码开关拨到SD卡端，上电：
U-Boot 2017.03-gff1b95e-dirty (Aug 06 2017 - 10:45:18 +0800) for TINY4412
CPU: Exynos4412 @ 1.4 GHz
Model: Tiny4412 based on Exynos4412
Board: Tiny4412 based on Exynos4412
DRAM: 1 GiB
WARNING: Caches not enabled
MMC: SAMSUNG SDHCI: 2, EXYNOS DWMMC: 4
Net: No ethernet found.
Hit any key to stop autoboot: 0
TINY4412 # mmc list
SAMSUNG SDHCI: 2 (SD)
EXYNOS DWMMC: 4当前包含2个mmc设备
TINY4412 # mmc partconf 4 1 1 1
TINY4412 # mmc dev 4 1
switch to partitions #1, OK
mmc4(part 1) is current device选择并切换到eMMC第1个分区，写入E4412_N.bl1.bin
TINY4412 # fatload mmc 2:1 0x50000000 E4412_N.bl1.bin
reading E4412_N.bl1.bin
8192 bytes read in 14 ms (571.3 KiB/s)
TINY4412 # mmc write 0x50000000 0 0x10
MMC write: dev # 4, block # 0, count 16 ... 16 blocks written: OK写入tiny4412-spl.bin
TINY4412 # fatload mmc 2:1 0x50000000 tiny4412-spl.bin
reading tiny4412-spl.bin
16384 bytes read in 14 ms (1.1 MiB/s)
TINY4412 # mmc write 0x50000000 0x10 0x20
MMC write: dev # 4, block # 16, count 32 ... 32 blocks written: OK写入u-boot.bin
TINY4412 # fatload mmc 2:1 0x50000000 u-boot.bin
reading u-boot.bin
477329 bytes read in 32 ms (14.2 MiB/s)
TINY4412 # mmc write 0x50000000 0x30 0x800
MMC write: dev # 4, block # 48, count 2048 ... 2048 blocks written: OK写入E4412_tzsw.bin
TINY4412 # fatload mmc 2:1 0x50000000 E4412_tzsw.bin
reading E4412_tzsw.bin
94208 bytes read in 17 ms (5.3 MiB/s)
TINY4412 # mmc write 0x50000000 0x830 0xB8
MMC write: dev # 4, block # 2096, count 184 ... 184 blocks written: OK全部写入完成！
上电测试
U-Boot 2017.03-gff1b95e-dirty (Aug 06 2017 - 11:39:04 +0800) for TINY4412
CPU: Exynos4412 @ 1.4 GHz
Model: Tiny4412 based on Exynos4412
Board: Tiny4412 based on Exynos4412
DRAM: 1 GiB
WARNING: Caches not enabled
MMC: SAMSUNG SDHCI: 2, EXYNOS DWMMC: 4
Net: No ethernet found.
Hit any key to stop autoboot: 0
TINY4412 #
TINY4412 #
TINY4412 # mmc list
SAMSUNG SDHCI: 2
EXYNOS DWMMC: 4 (eMMC)总结
- SD卡最开始的512字节是DBR(分区的引导记录)，位于整个SD分区的0号扇区（对应的物理扇区就是0x2000）固定512字节，其中记录着FAT文件系统的相关信息
而eMMC没有512字节的保留分区，需要将偏移量设置为
0注意：环境变量不能通过从
SD拷贝出来，粘贴到eMMC中替换