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uboot/u-boot-stm32mp-2020.01/board/technexion/pico-imx6/spl.c

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2024-01-10 06:52:34 +00:00
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Technexion Ltd.
*
* Author: Richard Hu <richard.hu@technexion.com>
* Fabio Estevam <festevam@gmail.com>
*/
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <linux/errno.h>
#include <asm/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/video.h>
#include <mmc.h>
#include <fsl_esdhc_imx.h>
#include <asm/arch/crm_regs.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <spl.h>
#if defined(CONFIG_SPL_BUILD)
#include <asm/arch/mx6-ddr.h>
#define IMX6DQ_DRIVE_STRENGTH 0x30
#define IMX6SDL_DRIVE_STRENGTH 0x28
#ifdef CONFIG_SPL_OS_BOOT
int spl_start_uboot(void)
{
/* Break into full U-Boot on 'c' */
if (serial_tstc() && serial_getc() == 'c')
return 1;
return 0;
}
#endif
/* configure MX6Q/DUAL mmdc DDR io registers */
static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
.dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH,
.dram_cas = IMX6DQ_DRIVE_STRENGTH,
.dram_ras = IMX6DQ_DRIVE_STRENGTH,
.dram_reset = IMX6DQ_DRIVE_STRENGTH,
.dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdba2 = 0x00000000,
.dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH,
.dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm0 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm1 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm2 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm3 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm4 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm5 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm6 = IMX6DQ_DRIVE_STRENGTH,
.dram_dqm7 = IMX6DQ_DRIVE_STRENGTH,
};
/* configure MX6Q/DUAL mmdc GRP io registers */
static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
.grp_ddr_type = 0x000c0000,
.grp_ddrmode_ctl = 0x00020000,
.grp_ddrpke = 0x00000000,
.grp_addds = IMX6DQ_DRIVE_STRENGTH,
.grp_ctlds = IMX6DQ_DRIVE_STRENGTH,
.grp_ddrmode = 0x00020000,
.grp_b0ds = IMX6DQ_DRIVE_STRENGTH,
.grp_b1ds = IMX6DQ_DRIVE_STRENGTH,
.grp_b2ds = IMX6DQ_DRIVE_STRENGTH,
.grp_b3ds = IMX6DQ_DRIVE_STRENGTH,
.grp_b4ds = IMX6DQ_DRIVE_STRENGTH,
.grp_b5ds = IMX6DQ_DRIVE_STRENGTH,
.grp_b6ds = IMX6DQ_DRIVE_STRENGTH,
.grp_b7ds = IMX6DQ_DRIVE_STRENGTH,
};
/* configure MX6SOLO/DUALLITE mmdc DDR io registers */
struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
.dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH,
.dram_cas = IMX6SDL_DRIVE_STRENGTH,
.dram_ras = IMX6SDL_DRIVE_STRENGTH,
.dram_reset = IMX6SDL_DRIVE_STRENGTH,
.dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdba2 = 0x00000000,
.dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH,
.dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm0 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm1 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm2 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm3 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm4 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm5 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm6 = IMX6SDL_DRIVE_STRENGTH,
.dram_dqm7 = IMX6SDL_DRIVE_STRENGTH,
};
/* configure MX6SOLO/DUALLITE mmdc GRP io registers */
struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
.grp_ddr_type = 0x000c0000,
.grp_ddrmode_ctl = 0x00020000,
.grp_ddrpke = 0x00000000,
.grp_addds = IMX6SDL_DRIVE_STRENGTH,
.grp_ctlds = IMX6SDL_DRIVE_STRENGTH,
.grp_ddrmode = 0x00020000,
.grp_b0ds = IMX6SDL_DRIVE_STRENGTH,
.grp_b1ds = IMX6SDL_DRIVE_STRENGTH,
.grp_b2ds = IMX6SDL_DRIVE_STRENGTH,
.grp_b3ds = IMX6SDL_DRIVE_STRENGTH,
.grp_b4ds = IMX6SDL_DRIVE_STRENGTH,
.grp_b5ds = IMX6SDL_DRIVE_STRENGTH,
.grp_b6ds = IMX6SDL_DRIVE_STRENGTH,
.grp_b7ds = IMX6SDL_DRIVE_STRENGTH,
};
/* H5T04G63AFR-PB for i.mx6Solo/DL operating DDR at 400MHz */
static struct mx6_ddr3_cfg h5t04g63afr = {
.mem_speed = 800,
.density = 4,
.width = 16,
.banks = 8,
.rowaddr = 15,
.coladdr = 10,
.pagesz = 2,
.trcd = 1500,
.trcmin = 5250,
.trasmin = 3750,
};
/* H5TQ2G63FFR-H9 for i.mx6Solo/DL operating DDR at 400MHz */
static struct mx6_ddr3_cfg h5tq2g63ffr = {
.mem_speed = 800,
.density = 2,
.width = 16,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.pagesz = 2,
.trcd = 1500,
.trcmin = 5250,
.trasmin = 3750,
};
static struct mx6_mmdc_calibration mx6q_1g_mmdc_calib = {
.p0_mpwldectrl0 = 0x00000000,
.p0_mpwldectrl1 = 0x00000000,
.p1_mpwldectrl0 = 0x00000000,
.p1_mpwldectrl1 = 0x00000000,
.p0_mpdgctrl0 = 0x032C0340,
.p0_mpdgctrl1 = 0x03300324,
.p1_mpdgctrl0 = 0x032C0338,
.p1_mpdgctrl1 = 0x03300274,
.p0_mprddlctl = 0x423A383E,
.p1_mprddlctl = 0x3638323E,
.p0_mpwrdlctl = 0x363C4640,
.p1_mpwrdlctl = 0x4034423C,
};
/* DDR 32bit */
static struct mx6_ddr_sysinfo mem_s = {
.dsize = 1,
.cs1_mirror = 0,
/* config for full 4GB range so that get_mem_size() works */
.cs_density = 32,
.ncs = 1,
.bi_on = 1,
.rtt_nom = 1,
.rtt_wr = 0,
.ralat = 5,
.walat = 0,
.mif3_mode = 3,
.rst_to_cke = 0x23,
.sde_to_rst = 0x10,
};
static struct mx6_mmdc_calibration mx6dl_1g_mmdc_calib = {
.p0_mpwldectrl0 = 0x001f001f,
.p0_mpwldectrl1 = 0x001f001f,
.p1_mpwldectrl0 = 0x001f001f,
.p1_mpwldectrl1 = 0x001f001f,
.p0_mpdgctrl0 = 0x420e020e,
.p0_mpdgctrl1 = 0x02000200,
.p1_mpdgctrl0 = 0x42020202,
.p1_mpdgctrl1 = 0x01720172,
.p0_mprddlctl = 0x494c4f4c,
.p1_mprddlctl = 0x4a4c4c49,
.p0_mpwrdlctl = 0x3f3f3133,
.p1_mpwrdlctl = 0x39373f2e,
};
static struct mx6_mmdc_calibration mx6s_512m_mmdc_calib = {
.p0_mpwldectrl0 = 0x0040003c,
.p0_mpwldectrl1 = 0x0032003e,
.p0_mpdgctrl0 = 0x42350231,
.p0_mpdgctrl1 = 0x021a0218,
.p0_mprddlctl = 0x4b4b4e49,
.p0_mpwrdlctl = 0x3f3f3035,
};
static void ccgr_init(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
writel(0x00C03F3F, &ccm->CCGR0);
writel(0x0030FC03, &ccm->CCGR1);
writel(0x0FFFC000, &ccm->CCGR2);
writel(0x3FF03000, &ccm->CCGR3);
writel(0x00FFF300, &ccm->CCGR4);
writel(0x0F0000C3, &ccm->CCGR5);
writel(0x000003FF, &ccm->CCGR6);
}
static void spl_dram_init(void)
{
if (is_mx6solo()) {
mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
mx6_dram_cfg(&mem_s, &mx6s_512m_mmdc_calib, &h5tq2g63ffr);
} else if (is_mx6dl()) {
mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
mx6_dram_cfg(&mem_s, &mx6dl_1g_mmdc_calib, &h5t04g63afr);
} else if (is_mx6dq()) {
mx6dq_dram_iocfg(32, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
mx6_dram_cfg(&mem_s, &mx6q_1g_mmdc_calib, &h5t04g63afr);
}
udelay(100);
}
void board_init_f(ulong dummy)
{
ccgr_init();
/* setup AIPS and disable watchdog */
arch_cpu_init();
gpr_init();
/* iomux */
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();
}
#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
static struct fsl_esdhc_cfg usdhc_cfg[1] = {
{USDHC3_BASE_ADDR},
};
static iomux_v3_cfg_t const usdhc3_pads[] = {
IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
/* SOM MicroSD Card Detect */
IOMUX_PADS(PAD_EIM_DA9__GPIO3_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL)),
};
int board_mmc_getcd(struct mmc *mmc)
{
return 1;
}
int board_mmc_init(bd_t *bis)
{
SETUP_IOMUX_PADS(usdhc3_pads);
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
}
#endif
#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
if (is_mx6dq() && !strcmp(name, "imx6q-pico"))
return 0;
else if ((is_mx6dl() || is_mx6solo()) && !strcmp(name, "imx6dl-pico"))
return 0;
return -EINVAL;
}
#endif