Add SPL boot support for mx6slevk board. 1. Introduce a configuration file mx6slevk_spl_defconfig. 2. i.MX6SL has same DRAM space with i.MX6SX, need to change SPL DRAM SPACE. 3. Include imx6_spl.h and related SPL macro in mx6slevk.h. 4. select SUPPORT_SPL for TARGET_MX6SLEVK. 5. Add SPL board code to do related initialization.
Boot Log:
U-Boot SPL 2015.07-00544-g1594a76 (Aug 17 2015 - 01:56:59) reading u-boot.img reading u-boot.img
U-Boot 2015.07-00544-g1594a76 (Aug 17 2015 - 01:56:59 +0000)
CPU: Freescale i.MX6SL rev1.2 996 MHz (running at 396 MHz) CPU: Commercial temperature grade (0C to 95C) at 50C Reset cause: POR Board: MX6SLEVK I2C: ready DRAM: 1 GiB PMIC: PFUZE100 ID=0x10 MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 *** Warning - bad CRC, using default environment
In: serial Out: serial Err: serial Net: FEC [PRIME] Hit any key to stop autoboot: 0
Signed-off-by: Peng Fan Peng.Fan@freescale.com Cc: Stefano Babic sbabic@denx.de Cc: Fabio Estevam fabio.estevam@freescale.com --- arch/arm/cpu/armv7/mx6/Kconfig | 1 + board/freescale/mx6slevk/mx6slevk.c | 164 ++++++++++++++++++++++++++++++++++++ configs/mx6slevk_spl_defconfig | 8 ++ include/configs/imx6_spl.h | 2 +- include/configs/mx6slevk.h | 7 ++ 5 files changed, 181 insertions(+), 1 deletion(-) create mode 100644 configs/mx6slevk_spl_defconfig
diff --git a/arch/arm/cpu/armv7/mx6/Kconfig b/arch/arm/cpu/armv7/mx6/Kconfig index c43cea8..6c63277 100644 --- a/arch/arm/cpu/armv7/mx6/Kconfig +++ b/arch/arm/cpu/armv7/mx6/Kconfig @@ -91,6 +91,7 @@ config TARGET_MX6SABRESD config TARGET_MX6SLEVK bool "mx6slevk" select CPU_V7 + select SUPPORT_SPL
config TARGET_MX6SXSABRESD bool "mx6sxsabresd" diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c index 7c18c90..41655e9 100644 --- a/board/freescale/mx6slevk/mx6slevk.c +++ b/board/freescale/mx6slevk/mx6slevk.c @@ -8,7 +8,9 @@
#include <asm/arch/clock.h> #include <asm/arch/iomux.h> +#include <asm/arch/crm_regs.h> #include <asm/arch/imx-regs.h> +#include <asm/arch/mx6-ddr.h> #include <asm/arch/mx6-pins.h> #include <asm/arch/sys_proto.h> #include <asm/gpio.h> @@ -190,6 +192,7 @@ int board_mmc_getcd(struct mmc *mmc)
int board_mmc_init(bd_t *bis) { +#ifndef CONFIG_SPL_BUILD int i, ret;
/* @@ -234,6 +237,44 @@ int board_mmc_init(bd_t *bis) }
return 0; +#else + struct src *src_regs = (struct src *)SRC_BASE_ADDR; + u32 val; + u32 port; + + val = readl(&src_regs->sbmr1); + + /* Boot from USDHC */ + port = (val >> 11) & 0x3; + switch (port) { + case 0: + imx_iomux_v3_setup_multiple_pads(usdhc1_pads, + ARRAY_SIZE(usdhc1_pads)); + gpio_direction_input(USDHC1_CD_GPIO); + usdhc_cfg[0].esdhc_base = USDHC1_BASE_ADDR; + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); + break; + case 1: + imx_iomux_v3_setup_multiple_pads(usdhc2_pads, + ARRAY_SIZE(usdhc2_pads)); + gpio_direction_input(USDHC2_CD_GPIO); + usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR; + usdhc_cfg[0].max_bus_width = 4; + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); + break; + case 2: + imx_iomux_v3_setup_multiple_pads(usdhc3_pads, + ARRAY_SIZE(usdhc3_pads)); + gpio_direction_input(USDHC3_CD_GPIO); + usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR; + usdhc_cfg[0].max_bus_width = 4; + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); + break; + } + + gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk; + return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); +#endif }
#ifdef CONFIG_SYS_I2C_MXC @@ -361,3 +402,126 @@ int checkboard(void)
return 0; } + +#ifdef CONFIG_SPL_BUILD +#include <spl.h> +#include <libfdt.h> + +const struct mx6sl_iomux_ddr_regs mx6_ddr_ioregs = { + .dram_sdqs0 = 0x00003030, + .dram_sdqs1 = 0x00003030, + .dram_sdqs2 = 0x00003030, + .dram_sdqs3 = 0x00003030, + .dram_dqm0 = 0x00000030, + .dram_dqm1 = 0x00000030, + .dram_dqm2 = 0x00000030, + .dram_dqm3 = 0x00000030, + .dram_cas = 0x00000030, + .dram_ras = 0x00000030, + .dram_sdclk_0 = 0x00000028, + .dram_reset = 0x00000030, + .dram_sdba2 = 0x00000000, + .dram_odt0 = 0x00000008, + .dram_odt1 = 0x00000008, +}; + +const struct mx6sl_iomux_grp_regs mx6_grp_ioregs = { + .grp_b0ds = 0x00000030, + .grp_b1ds = 0x00000030, + .grp_b2ds = 0x00000030, + .grp_b3ds = 0x00000030, + .grp_addds = 0x00000030, + .grp_ctlds = 0x00000030, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, + .grp_ddrmode = 0x00020000, + .grp_ddr_type = 0x00080000, +}; + +const struct mx6_mmdc_calibration mx6_mmcd_calib = { + .p0_mpdgctrl0 = 0x20000000, + .p0_mpdgctrl1 = 0x00000000, + .p0_mprddlctl = 0x4241444a, + .p0_mpwrdlctl = 0x3030312b, + .mpzqlp2ctl = 0x1b4700c7, +}; + +static struct mx6_lpddr2_cfg mem_ddr = { + .mem_speed = 800, + .density = 4, + .width = 32, + .banks = 8, + .rowaddr = 14, + .coladdr = 10, + .trcd_lp = 2000, + .trppb_lp = 2000, + .trpab_lp = 2250, + .trasmin = 4200, +}; + +static void ccgr_init(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + writel(0xFFFFFFFF, &ccm->CCGR0); + writel(0xFFFFFFFF, &ccm->CCGR1); + writel(0xFFFFFFFF, &ccm->CCGR2); + writel(0xFFFFFFFF, &ccm->CCGR3); + writel(0xFFFFFFFF, &ccm->CCGR4); + writel(0xFFFFFFFF, &ccm->CCGR5); + writel(0xFFFFFFFF, &ccm->CCGR6); + + writel(0x00260324, &ccm->cbcmr); +} + +static void spl_dram_init(void) +{ + struct mx6_ddr_sysinfo sysinfo = { + .dsize = mem_ddr.width / 32, + .cs_density = 20, + .ncs = 2, + .cs1_mirror = 0, + .walat = 0, + .ralat = 2, + .mif3_mode = 3, + .bi_on = 1, + .rtt_wr = 0, /* LPDDR2 does not need rtt_wr rtt_nom */ + .rtt_nom = 0, + .sde_to_rst = 0, /* LPDDR2 does not need this field */ + .rst_to_cke = 0x10, /* JEDEC value for LPDDR2: 200us */ + .ddr_type = 1, /* LPDDR2 */ + }; + mx6sl_dram_iocfg(32, &mx6_ddr_ioregs, &mx6_grp_ioregs); + mx6_dram_cfg(&sysinfo, &mx6_mmcd_calib, &mem_ddr); +} + +void board_init_f(ulong dummy) +{ + /* setup AIPS and disable watchdog */ + arch_cpu_init(); + + ccgr_init(); + + /* iomux and setup of i2c */ + board_early_init_f(); + + /* setup GP timer */ + timer_init(); + + /* UART clocks enabled and gd valid - init serial console */ + preloader_console_init(); + + /* DDR initialization */ + spl_dram_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + /* load/boot image from boot device */ + board_init_r(NULL, 0); +} + +void reset_cpu(ulong addr) +{ +} +#endif diff --git a/configs/mx6slevk_spl_defconfig b/configs/mx6slevk_spl_defconfig new file mode 100644 index 0000000..1fbd0d1 --- /dev/null +++ b/configs/mx6slevk_spl_defconfig @@ -0,0 +1,8 @@ +CONFIG_ARM=y +CONFIG_ARCH_MX6=y +CONFIG_TARGET_MX6SLEVK=y +CONFIG_SPL=y +CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,SPL,MX6SL" +CONFIG_DM=y +CONFIG_SPI_FLASH=y +CONFIG_DM_THERMAL=y diff --git a/include/configs/imx6_spl.h b/include/configs/imx6_spl.h index 0a585b7..1744f2c 100644 --- a/include/configs/imx6_spl.h +++ b/include/configs/imx6_spl.h @@ -61,7 +61,7 @@ #define CONFIG_SPL_LIBDISK_SUPPORT #endif
-#if defined(CONFIG_MX6SX) || defined(CONFIG_MX6UL) +#if defined(CONFIG_MX6SX) || defined(CONFIG_MX6UL) || defined(CONFIG_MX6SL) #define CONFIG_SPL_BSS_START_ADDR 0x88200000 #define CONFIG_SPL_BSS_MAX_SIZE 0x100000 /* 1 MB */ #define CONFIG_SYS_SPL_MALLOC_START 0x88300000 diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h index 3cecd94..04d53a7 100644 --- a/include/configs/mx6slevk.h +++ b/include/configs/mx6slevk.h @@ -11,6 +11,13 @@
#include "mx6_common.h"
+#ifdef CONFIG_SPL +#define CONFIG_SPL_LIBCOMMON_SUPPORT +#define CONFIG_SPL_MMC_SUPPORT +#define CONFIG_SPL_FAT_SUPPORT +#include "imx6_spl.h" +#endif + #define MACH_TYPE_MX6SLEVK 4307 #define CONFIG_MACH_TYPE MACH_TYPE_MX6SLEVK