wandboard: Switch to SPL support
Currently we need to build one U-boot image for each of the wandboard
variants: quad, dual-lite and solo.
By switching to SPL we can support all these variants with a single binary,
which is very convenient.
Based on the work from Richard Hu.
Tested kernel booting on the three boards.
Signed-off-by: Richard Hu <hakahu@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Tested-by: Vagrant Cascadian <vagrant@aikidev.net>
Reviewed-by: Stefano Babic <sbabic@denx.de>
diff --git a/board/wandboard/spl.c b/board/wandboard/spl.c
new file mode 100644
index 0000000..77afae7
--- /dev/null
+++ b/board/wandboard/spl.c
@@ -0,0 +1,317 @@
+/*
+ * Copyright (C) 2014 Wandboard
+ * Author: Tungyi Lin <tungyilin1127@gmail.com>
+ * Richard Hu <hakahu@gmail.com>
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/video.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_SPL_BUILD)
+#include <asm/arch/mx6-ddr.h>
+/*
+ * Driving strength:
+ * 0x30 == 40 Ohm
+ * 0x28 == 48 Ohm
+ */
+
+#define IMX6DQ_DRIVE_STRENGTH 0x30
+#define IMX6SDL_DRIVE_STRENGTH 0x28
+
+/* 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 */
+static struct mx6_ddr3_cfg h5t04g63afr = {
+ .mem_speed = 1600,
+ .density = 4,
+ .width = 16,
+ .banks = 8,
+ .rowaddr = 15,
+ .coladdr = 10,
+ .pagesz = 2,
+ .trcd = 1375,
+ .trcmin = 4875,
+ .trasmin = 3500,
+};
+
+/* H5TQ2G63DFR-H9 */
+static struct mx6_ddr3_cfg h5tq2g63dfr = {
+ .mem_speed = 1333,
+ .density = 2,
+ .width = 16,
+ .banks = 8,
+ .rowaddr = 14,
+ .coladdr = 10,
+ .pagesz = 2,
+ .trcd = 1350,
+ .trcmin = 4950,
+ .trasmin = 3600,
+};
+
+static struct mx6_mmdc_calibration mx6q_2g_mmdc_calib = {
+ .p0_mpwldectrl0 = 0x001f001f,
+ .p0_mpwldectrl1 = 0x001f001f,
+ .p1_mpwldectrl0 = 0x001f001f,
+ .p1_mpwldectrl1 = 0x001f001f,
+ .p0_mpdgctrl0 = 0x4301030d,
+ .p0_mpdgctrl1 = 0x03020277,
+ .p1_mpdgctrl0 = 0x4300030a,
+ .p1_mpdgctrl1 = 0x02780248,
+ .p0_mprddlctl = 0x4536393b,
+ .p1_mprddlctl = 0x36353441,
+ .p0_mpwrdlctl = 0x41414743,
+ .p1_mpwrdlctl = 0x462f453f,
+};
+
+/* DDR 64bit 2GB */
+static struct mx6_ddr_sysinfo mem_q = {
+ .dsize = 2,
+ .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,
+};
+
+/* DDR 64bit 1GB */
+static struct mx6_ddr_sysinfo mem_dl = {
+ .dsize = 2,
+ .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,
+};
+
+/* DDR 32bit 512MB */
+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 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(0x3FF00000, &ccm->CCGR3);
+ writel(0x00FFF300, &ccm->CCGR4);
+ writel(0x0F0000C3, &ccm->CCGR5);
+ writel(0x000003FF, &ccm->CCGR6);
+}
+
+static void gpr_init(void)
+{
+ struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+ /* enable AXI cache for VDOA/VPU/IPU */
+ writel(0xF00000CF, &iomux->gpr[4]);
+ /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
+ writel(0x007F007F, &iomux->gpr[6]);
+ writel(0x007F007F, &iomux->gpr[7]);
+}
+
+static void spl_dram_init(void)
+{
+ if (is_cpu_type(MXC_CPU_MX6SOLO)) {
+ mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
+ mx6_dram_cfg(&mem_s, &mx6s_512m_mmdc_calib, &h5tq2g63dfr);
+ } else if (is_cpu_type(MXC_CPU_MX6DL)) {
+ mx6sdl_dram_iocfg(64, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
+ mx6_dram_cfg(&mem_dl, &mx6dl_1g_mmdc_calib, &h5tq2g63dfr);
+ } else if (is_cpu_type(MXC_CPU_MX6Q)) {
+ mx6dq_dram_iocfg(64, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
+ mx6_dram_cfg(&mem_q, &mx6q_2g_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();
+
+ /* Clear the BSS. */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ /* load/boot image from boot device */
+ board_init_r(NULL, 0);
+}
+#endif