In preparation for use of DDR DRAM fine-tuning upon boot, convert the board to SPL framework instead of using DCD tables to bring up DRAM and pinmux.
Signed-off-by: Marek Vasut marex@denx.de Cc: Fabio Estevam fabio.estevam@nxp.com Cc: Silvio Fricke silvio.fricke@softing.com Cc: Stefano Babic sbabic@denx.de --- arch/arm/mach-imx/mx6/Kconfig | 1 + board/softing/vining_2000/vining_2000.c | 182 ++++++++++++++++++++++++ configs/vining_2000_defconfig | 12 +- include/configs/vining_2000.h | 4 + 4 files changed, 198 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig index 607210520f..ef816a24ff 100644 --- a/arch/arm/mach-imx/mx6/Kconfig +++ b/arch/arm/mach-imx/mx6/Kconfig @@ -558,6 +558,7 @@ config TARGET_SOFTING_VINING_2000 select DM select DM_THERMAL select MX6SX + select SUPPORT_SPL imply CMD_DM
config TARGET_WANDBOARD diff --git a/board/softing/vining_2000/vining_2000.c b/board/softing/vining_2000/vining_2000.c index 51985b91c2..086de1eaf5 100644 --- a/board/softing/vining_2000/vining_2000.c +++ b/board/softing/vining_2000/vining_2000.c @@ -432,3 +432,185 @@ int checkboard(void)
return 0; } + +#ifdef CONFIG_SPL_BUILD +#include <linux/libfdt.h> +#include <spl.h> +#include <asm/arch/mx6-ddr.h> + +static struct fsl_esdhc_cfg usdhc_cfg = { USDHC4_BASE_ADDR }; + +static iomux_v3_cfg_t const uart_pads[] = { + MX6_PAD_GPIO1_IO04__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_GPIO1_IO05__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL), +}; + +static iomux_v3_cfg_t const usdhc4_pads[] = { + MX6_PAD_SD4_CLK__USDHC4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_CMD__USDHC4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA0__USDHC4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA1__USDHC4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA2__USDHC4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA3__USDHC4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA4__USDHC4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA5__USDHC4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA6__USDHC4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DATA7__USDHC4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), +}; + +static void vining2000_spl_setup_iomux_uart(void) +{ + imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads)); +} + +int board_mmc_init(bd_t *bis) +{ + struct src *src_regs = (struct src *)SRC_BASE_ADDR; + u32 val; + u32 port; + + val = readl(&src_regs->sbmr1); + + if ((val & 0xc0) != 0x40) { + printf("Not boot from USDHC!\n"); + return -EINVAL; + } + + port = (val >> 11) & 0x3; + printf("port %d\n", port); + switch (port) { + case 3: + imx_iomux_v3_setup_multiple_pads( + usdhc4_pads, ARRAY_SIZE(usdhc4_pads)); + usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK); + usdhc_cfg.esdhc_base = USDHC4_BASE_ADDR; + break; + } + + gd->arch.sdhc_clk = usdhc_cfg.sdhc_clk; + return fsl_esdhc_initialize(bis, &usdhc_cfg); +} + +int board_mmc_getcd(struct mmc *mmc) +{ + return 1; +} + +const struct mx6sx_iomux_ddr_regs mx6_ddr_ioregs = { + .dram_dqm0 = 0x00000028, + .dram_dqm1 = 0x00000028, + .dram_dqm2 = 0x00000028, + .dram_dqm3 = 0x00000028, + .dram_ras = 0x00000028, + .dram_cas = 0x00000028, + .dram_odt0 = 0x00000028, + .dram_odt1 = 0x00000028, + .dram_sdba2 = 0x00000000, + .dram_sdcke0 = 0x00003000, + .dram_sdcke1 = 0x00003000, + .dram_sdclk_0 = 0x00000030, + .dram_sdqs0 = 0x00000028, + .dram_sdqs1 = 0x00000028, + .dram_sdqs2 = 0x00000028, + .dram_sdqs3 = 0x00000028, + .dram_reset = 0x00000028, +}; + +const struct mx6sx_iomux_grp_regs mx6_grp_ioregs = { + .grp_addds = 0x00000028, + .grp_b0ds = 0x00000028, + .grp_b1ds = 0x00000028, + .grp_b2ds = 0x00000028, + .grp_b3ds = 0x00000028, + .grp_ctlds = 0x00000028, + .grp_ddr_type = 0x000c0000, + .grp_ddrmode = 0x00020000, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, +}; + +const struct mx6_mmdc_calibration mx6_mmcd_calib = { + .p0_mpwldectrl0 = 0x0022001C, + .p0_mpwldectrl1 = 0x001F001A, + .p0_mpdgctrl0 = 0x01380134, + .p0_mpdgctrl1 = 0x0124011C, + .p0_mprddlctl = 0x42404444, + .p0_mpwrdlctl = 0x36383C38, +}; + +static struct mx6_ddr3_cfg mem_ddr = { + .mem_speed = 1600, + .density = 4, + .width = 32, + .banks = 8, + .rowaddr = 15, + .coladdr = 10, + .pagesz = 2, + .trcd = 1391, + .trcmin = 4875, + .trasmin = 3500, +}; + +static void ccgr_init(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + writel(0xF000000F, &ccm->CCGR0); /* AIPS_TZ{1,2,3} */ + writel(0x303C0000, &ccm->CCGR1); /* GPT, OCRAM */ + writel(0x00FFFCC0, &ccm->CCGR2); /* IPMUX, I2C1, I2C3 */ + writel(0x3F300030, &ccm->CCGR3); /* OCRAM, MMDC, ENET */ + writel(0x0000C003, &ccm->CCGR4); /* PCI, PL301 */ + writel(0x0F0330C3, &ccm->CCGR5); /* UART, ROM */ + writel(0x00000F00, &ccm->CCGR6); /* SDHI4, EIM */ +} + +static void vining2000_spl_dram_init(void) +{ + struct mx6_ddr_sysinfo sysinfo = { + .dsize = mem_ddr.width / 32, + .cs_density = 24, + .ncs = 1, + .cs1_mirror = 0, + .rtt_wr = 1, /* RTT_wr = RZQ/4 */ + .rtt_nom = 1, /* RTT_Nom = RZQ/4 */ + .walat = 1, /* Write additional latency */ + .ralat = 5, /* Read additional latency */ + .mif3_mode = 3, /* Command prediction working mode */ + .bi_on = 1, /* Bank interleaving enabled */ + .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ + .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ + .ddr_type = DDR_TYPE_DDR3, + .refsel = 1, /* Refresh cycles at 32KHz */ + .refr = 7, /* 8 refresh commands per refresh cycle */ + }; + + mx6sx_dram_iocfg(mem_ddr.width, &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 setup */ + vining2000_spl_setup_iomux_uart(); + + /* setup GP timer */ + timer_init(); + + /* UART clocks enabled and gd valid - init serial console */ + preloader_console_init(); + + /* DDR initialization */ + vining2000_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); +} +#endif diff --git a/configs/vining_2000_defconfig b/configs/vining_2000_defconfig index 32ef01b639..4f9f538189 100644 --- a/configs/vining_2000_defconfig +++ b/configs/vining_2000_defconfig @@ -1,18 +1,29 @@ CONFIG_ARM=y CONFIG_ARCH_MX6=y CONFIG_SYS_TEXT_BASE=0x87800000 +CONFIG_SPL_GPIO_SUPPORT=y +CONFIG_SPL_LIBCOMMON_SUPPORT=y +CONFIG_SPL_LIBGENERIC_SUPPORT=y CONFIG_SYS_MALLOC_F_LEN=0x4000 CONFIG_TARGET_SOFTING_VINING_2000=y +CONFIG_SPL_MMC_SUPPORT=y +CONFIG_SPL_SERIAL_SUPPORT=y CONFIG_ENV_SIZE=0x2000 CONFIG_ENV_OFFSET=0x80000 CONFIG_NR_DRAM_BANKS=1 +CONFIG_SPL=y +CONFIG_SPL_LIBDISK_SUPPORT=y # CONFIG_CMD_BMODE is not set +CONFIG_SPL_TEXT_BASE=0x00908000 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/softing/vining_2000/imximage.cfg" CONFIG_BOOTDELAY=0 CONFIG_SYS_CONSOLE_IS_IN_ENV=y CONFIG_SUPPORT_RAW_INITRD=y CONFIG_BOUNCE_BUFFER=y CONFIG_BOARD_EARLY_INIT_F=y +CONFIG_SPL_FS_EXT4=y +CONFIG_SPL_I2C_SUPPORT=y +CONFIG_SPL_WATCHDOG_SUPPORT=y CONFIG_HUSH_PARSER=y CONFIG_CMD_BOOTZ=y # CONFIG_CMD_FLASH is not set @@ -53,7 +64,6 @@ CONFIG_DM_PCI=y CONFIG_PINCTRL=y CONFIG_PINCTRL_IMX6=y CONFIG_PWM_IMX=y -CONFIG_SPECIFY_CONSOLE_INDEX=y CONFIG_DM_SERIAL=y CONFIG_MXC_UART=y CONFIG_USB=y diff --git a/include/configs/vining_2000.h b/include/configs/vining_2000.h index 54c8c2f62e..377406f842 100644 --- a/include/configs/vining_2000.h +++ b/include/configs/vining_2000.h @@ -91,4 +91,8 @@ #define CONFIG_SYS_MMC_ENV_PART 1 /* boot0 */ #endif
+#ifdef CONFIG_SPL_BUILD +#define CONFIG_MXC_UART_BASE UART1_BASE +#endif + #endif /* __CONFIG_H */