[TINY4412移植篇]u-boot-2020.01

一)环境

a)ubuntu18.04

b)arm-linux-gnueabi-gcc 7.5.0 / gcc 7.5.0

c)FriendlyArm tiny4412 标准版

二)目标

a)上电从SD卡启动u-boot

b)u-boot从SD卡启动linux

c)linux从SD卡加载根文件系统

d)使用当前最新版u-boot-2020.01.tar.bz2;下载地址:ftp://ftp.denx.de/pub/u-boot/

e)使用当前最新版busybox-1.31.1.tar.bz2,下载地址:https://busybox.net/downloads/

f)使用当前最新版linux-5.5.tar.xz,下载地址:https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/

 

三)步骤

a)Makefile:
1)add "ARCH = arm";
2)add "CROSS_COMPILE = arm-linux-gnueabi-";
3)comment CFGCHK;

b)configs/tiny4412_defconfig:
1)cp configs/origen_defconfig configs/tiny4412_defconfig;
2)change "ORIGEN" to "TINY4412";
3)change "4210" to "4412";
4)change CONFIG_SPL_TEXT_BASE value to 0x02023400;
5)change CONFIG_DEFAULT_DEVICE_TREE to "exynos4412-tiny4412";
6)change CONFIG_ENV_SIZE to 0x4000;
7)change CONFIG_ENV_OFFSET to 0x6200;
note:please read sd_fusing.sh to set above 6) and 7)

c)include/configs/tiny4412.h:
1)cp include/configs/origen.h include/configs/tiny4412.h;
2)change "ORIGEN" to "TINY4412";
3)change "4210" to "4412";
4)add "dtbaddr=0x42000000\0" in CONFIG_EXTRA_ENV_SETTINGS;
5)add "load mmc ${mmcdev} ${loadaddr} uImage;"  in CONFIG_BOOTCOMMAND;
6)add "load mmc ${mmcdev} ${rdaddr} ramdisk.img;"  in CONFIG_BOOTCOMMAND;
7)add "load mmc ${mmcdev} ${dtbaddr} exynos4412-tiny4412.dtb;"  in CONFIG_BOOTCOMMAND;
8)add "bootm ${loadaddr} ${rdaddr} ${dtbaddr}"  in CONFIG_BOOTCOMMAND;
9)add marco "#define CONFIG_SPL_SERIAL_SUPPORT";
10)add marco "#define CONFIG_SPL_GPIO_SUPPORT";
11)add marco "#define CONFIG_DEBUG_UART";
12)add marco "#define CONFIG_DEBUG_UART_S5P";
13)add marco "#define CONFIG_DEBUG_UART_BASE 0x13800000";
14)add marco "#define CONFIG_DEBUG_UART_CLOCK (100000000)";

d)board/samsung/tiny4412:
1)cp -rf board/samsung/origen board/samsung/tiny4412;
2)cd board/samsung/tiny4412/;
3)mv origen.c tiny4412.c;
4)mv tools/mkorigenspl.c  tools/mktiny4412spl.c;
5)change "origen" to "tiny4412" in Makefile;[!!Match case]
6)change "origen" to "tiny4412" in MAINTAINERS;[!!Match case]
7)change "origen" to "tiny4412" in Makefile;[!!Match case]

e)arch/arm/dts/exynos4412-tiny4412.dts:
1)cp -f arch/arm/dts/exynos4210-origen.dts arch/arm/dts/exynos4412-tiny4412.dts;
2)change model value to "Friendly Tiny4412 board based on Exynos4412";
3)change compatible value to "friendly,tiny4412", "samsung,exynos4412";
4)change "4210" to "4412";
5)change console value to "/serial@13800000" in aliases;
6)add "mmc0 = "/sdhci@12530000";" in aliases;
7)int root body, add sdhci@12530000 node like this:
  sdhci@12530000
  {
    compatible = "samsung,exynos4412-sdhci";
    samsung,bus-width = <4>;
    samsung,timing = <1 2 3>;
    cd-gpios = <&gpk2 2 0>;
  };

f)drivers/serial/serial_s5p.c:
1)change ufcon value to 0x11 in s5p_serial_init();
2)change ucon value to 0x3c5 in s5p_serial_init();

g)arch/arm/mach-exynos/Makefile:
1)change CONFIG_EXYNOS4210 to CONFIG_EXYNOS4412;

h)arch/arm/mach-exynos/clock_init_exynos4.c:
1)void system_clock_init(void)
  {
      struct exynos4x12_clock *clk =
              (struct exynos4x12_clock *)samsung_get_base_clock();

      /* APLL= 1400 MHz MPLL=800 MHz */

      writel(0x01000001, &clk->src_cpu);

      sdelay(0x10000);

      writel(0x10, &clk->src_leftbus);
      writel(0x10, &clk->src_rightbus);
      writel(0x110, &clk->src_top0);
      writel(0x1111000, &clk->src_top1);
      writel(0x00011000, &clk->src_dmc);
      writel(CLK_SRC_FSYS_VAL, &clk->src_fsys);
      writel(CLK_SRC_PERIL0_VAL, &clk->src_peril0);
      writel(CLK_SRC_CAM_VAL, &clk->src_cam);
      writel(CLK_SRC_MFC_VAL, &clk->src_mfc);
      writel(CLK_SRC_G3D_VAL, &clk->src_g3d);
      //writel(CLK_SRC_LCD0_VAL, &clk->src_lcd0);

      sdelay(0x10000);

      writel(0x1160730, &clk->div_cpu0);
      writel(0x506, &clk->div_cpu1);
      writel(0x111113, &clk->div_dmc0);
      writel(0x1011713, &clk->div_dmc1);
      writel(CLK_DIV_FSYS1_VAL, &clk->div_fsys1);
      writel(0x4070047, &clk->div_fsys2);
      writel(CLK_DIV_FSYS3_VAL, &clk->div_fsys3);
      writel(CLK_DIV_PERIL0_VAL, &clk->div_peril0);
      writel(CLK_DIV_CAM_VAL, &clk->div_cam);
      writel(CLK_DIV_MFC_VAL, &clk->div_mfc);
      writel(CLK_DIV_G3D_VAL, &clk->div_g3d);
      //writel(CLK_DIV_LCD0_VAL, &clk->div_lcd0);

      /* Set PLL locktime */
      writel(PLL_LOCKTIME, &clk->apll_lock);
      writel(PLL_LOCKTIME, &clk->mpll_lock);
      writel(PLL_LOCKTIME, &clk->epll_lock);
      writel(PLL_LOCKTIME, &clk->vpll_lock);

      writel(0x803800, &clk->apll_con1);
      writel(0x80af0300, &clk->apll_con0);
      writel(0x803800, &clk->mpll_con1);
      writel(0x80640300, &clk->mpll_con0);
      writel(EPLL_CON1_VAL, &clk->epll_con1);
      writel(EPLL_CON0_VAL, &clk->epll_con0);
      writel(VPLL_CON1_VAL, &clk->vpll_con1);
      writel(VPLL_CON0_VAL, &clk->vpll_con0);

      sdelay(0x30000);
  }

i)arch/arm/mach-exynos/dmc_init_exynos4.c:
1)struct mem_timings mem = {
      .direct_cmd_msr = {
          DIRECT_CMD1, DIRECT_CMD2, DIRECT_CMD3, DIRECT_CMD4
      },

      .timingref =    0x000000bb,//TIMINGREF_VAL,
      .timingrow =    0x7a46654f,//TIMINGROW_VAL,
      .timingdata =    0x46400506,//TIMINGDATA_VAL,
      .timingpower =    0x52000a3c,//TIMINGPOWER_VAL,
      .zqcontrol =    0xe3854c03,//ZQ_CONTROL_VAL,
      .control0 =    0x7110100b,//CONTROL0_VAL,
      .control1 =    0xe0000086,//CONTROL1_VAL,
      .control2 =    0x00000000,//CONTROL2_VAL,
      .concontrol =    0x0fff333a,//CONCONTROL_VAL,
      .prechconfig =    0xff000000,//PRECHCONFIG,
      .memcontrol =    0x00302640,//MEMCONTROL_VAL,
      .memconfig0 =    0x40c01333,//MEMCONFIG0_VAL,
      .memconfig1 =    0x80e01323,//MEMCONFIG1_VAL,

      .dll_resync = FORCE_DLL_RESYNC,
      .dll_on = DLL_CONTROL_ON,
  };
2)in dmc_init(), after line "writel(mem.memconfig1, &dmc->memconfig1);", add:
writel(0x8000001F, &dmc->ivcontrol);
3)change "origen" to "tiny4412" in Makefile;[!!Match case]

j)arch/arm/mach-exynos/tzpc.c:
1)change "writel(DECPROTXSET, &tzpc->decprot2set);" to "writel(0xbd,         &tzpc->decprot2set);";

k)arch/arm/mach-exynos/Kconfig:
1)add tiny4412 config like origen;[!!Match case]

l)arch/arm/dts/Makefile:
1)add exynos4412-tiny4412.dtb in dtb-$(CONFIG_EXYNOS4);

m)arch/arm/mach-exynos/exynos4_setup.h:
1)change "origen" to "tiny4412";[!!Match case]

n)arch/arm/mach-exynos/lowlevel_init.c:
1)change PERIPH_ID_UART3 to PERIPH_ID_UART0 in do_lowlevel_init();

o)board/samsung/common/exynos-uboot-spl.lds:
1)change IMAGE_TEXT_BASE to CONFIG_SPL_TEXT_BASE;

p)drivers/mmc/sdhci.c:
1)return 1 with doing nothing in sdhci_get_cd();

q).config:
1)cp configs/tiny4412_defconfig .config

r)menuconfig:
1)make menuconfig;
2)press [Exit];
3)press [Yes];

s)make -j12

t)fuse:
1)cp -rf sd_fuse ./
2)add ./fuse.sh, and write:
cd sd_fuse/tiny4412
sudo ./sd_fusing.sh /dev/sdb
cd ../../
3)chmod +x ./fuse.sh
4)./fuse.sh

以上步骤,本人均一一验证.

参考若干网上资料,不一一列举,在此表示感谢.

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