[U-Boot] [PATCH 02/13] pico-imx6ul: Convert to SPL
Otavio Salvador
otavio at ossystems.com.br
Thu Aug 30 19:10:15 UTC 2018
From: Fabio Estevam <festevam at gmail.com>
There are two versions of imx6ul pico SOMs: one with 256MB and another
one with 512MB of RAM.
Convert to SPL so that both versions can be supported.
Currently only the 256MB is tested/supported.
Signed-off-by: Fabio Estevam <festevam at gmail.com>
Signed-off-by: Fabio Berton <fabio.berton at ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
---
arch/arm/mach-imx/mx6/Kconfig | 1 +
board/technexion/pico-imx6ul/Makefile | 2 +-
board/technexion/pico-imx6ul/spl.c | 115 ++++++++++++++++++++++++++
configs/pico-imx6ul_defconfig | 14 +++-
include/configs/pico-imx6ul.h | 1 +
5 files changed, 131 insertions(+), 2 deletions(-)
create mode 100644 board/technexion/pico-imx6ul/spl.c
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig
index a2799c436e..06c25bae36 100644
--- a/arch/arm/mach-imx/mx6/Kconfig
+++ b/arch/arm/mach-imx/mx6/Kconfig
@@ -402,6 +402,7 @@ config TARGET_OT1200
config TARGET_PICO_IMX6UL
bool "PICO-IMX6UL-EMMC"
select MX6UL
+ select SUPPORT_SPL
config TARGET_LITEBOARD
bool "Grinn liteBoard (i.MX6UL)"
diff --git a/board/technexion/pico-imx6ul/Makefile b/board/technexion/pico-imx6ul/Makefile
index 8fdb7875ac..b7493df01c 100644
--- a/board/technexion/pico-imx6ul/Makefile
+++ b/board/technexion/pico-imx6ul/Makefile
@@ -2,4 +2,4 @@
# (C) Copyright 2015 Technexion Ltd.
# (C) Copyright 2015 Freescale Semiconductor, Inc.
-obj-y := pico-imx6ul.o
+obj-y := pico-imx6ul.o spl.o
diff --git a/board/technexion/pico-imx6ul/spl.c b/board/technexion/pico-imx6ul/spl.c
new file mode 100644
index 0000000000..6989c81946
--- /dev/null
+++ b/board/technexion/pico-imx6ul/spl.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <asm/arch/clock.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/mx6ul_pins.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <linux/libfdt.h>
+#include <spl.h>
+
+#if defined(CONFIG_SPL_BUILD)
+#include <asm/arch/mx6-ddr.h>
+
+static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
+ .grp_addds = 0x00000030,
+ .grp_ddrmode_ctl = 0x00020000,
+ .grp_b0ds = 0x00000030,
+ .grp_ctlds = 0x00000030,
+ .grp_b1ds = 0x00000030,
+ .grp_ddrpke = 0x00000000,
+ .grp_ddrmode = 0x00020000,
+ .grp_ddr_type = 0x00080000,
+};
+
+static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
+ .dram_dqm0 = 0x00000030,
+ .dram_dqm1 = 0x00000030,
+ .dram_ras = 0x00000030,
+ .dram_cas = 0x00000030,
+ .dram_odt0 = 0x00000030,
+ .dram_odt1 = 0x00000030,
+ .dram_sdba2 = 0x00000000,
+ .dram_sdclk_0 = 0x00000030,
+ .dram_sdqs0 = 0x00000030,
+ .dram_sdqs1 = 0x00000030,
+ .dram_reset = 0x00000030,
+};
+
+static struct mx6_mmdc_calibration mx6_mmcd_calib = {
+ .p0_mpwldectrl0 = 0x00000000,
+ .p0_mpdgctrl0 = 0x01380134,
+ .p0_mprddlctl = 0x40404244,
+ .p0_mpwrdlctl = 0x40405050,
+};
+
+static struct mx6_ddr_sysinfo ddr_sysinfo = {
+ .dsize = 0,
+ .cs1_mirror = 0,
+ .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,
+ .refsel = 1,
+ .refr = 3,
+};
+
+static struct mx6_ddr3_cfg mem_ddr = {
+ .mem_speed = 1333,
+ .density = 2,
+ .width = 16,
+ .banks = 8,
+ .rowaddr = 14,
+ .coladdr = 10,
+ .pagesz = 2,
+ .trcd = 1350,
+ .trcmin = 4950,
+ .trasmin = 3600,
+};
+
+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(0xFFFFFFFF, &ccm->CCGR7);
+}
+
+static void spl_dram_init(void)
+{
+ mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
+ mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
+}
+
+void board_init_f(ulong dummy)
+{
+ ccgr_init();
+ arch_cpu_init();
+ board_early_init_f();
+ timer_init();
+ preloader_console_init();
+ spl_dram_init();
+ memset(__bss_start, 0, __bss_end - __bss_start);
+ board_init_r(NULL, 0);
+}
+
+void reset_cpu(ulong addr)
+{
+}
+#endif
diff --git a/configs/pico-imx6ul_defconfig b/configs/pico-imx6ul_defconfig
index 3f969a2d6e..589e67be96 100644
--- a/configs/pico-imx6ul_defconfig
+++ b/configs/pico-imx6ul_defconfig
@@ -1,12 +1,23 @@
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_TARGET_PICO_IMX6UL=y
+CONFIG_SPL_MMC_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL=y
+CONFIG_SPL_LIBDISK_SUPPORT=y
# CONFIG_CMD_BMODE is not set
CONFIG_NR_DRAM_BANKS=1
CONFIG_DISTRO_DEFAULTS=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/technexion/pico-imx6ul/imximage.cfg"
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg"
CONFIG_BOOTCOMMAND="run finduuid; run distro_bootcmd"
+CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_SPL_USB_HOST_SUPPORT=y
+CONFIG_SPL_USB_GADGET_SUPPORT=y
+CONFIG_SPL_USB_SDP_SUPPORT=y
CONFIG_BOOTDELAY=3
CONFIG_SUPPORT_RAW_INITRD=y
CONFIG_DEFAULT_FDT_FILE="imx6ul-pico-hobbit.dtb"
@@ -21,6 +32,7 @@ CONFIG_CMD_GPT=y
CONFIG_CMD_MMC=y
CONFIG_CMD_PART=y
CONFIG_CMD_USB=y
+CONFIG_CMD_USB_SDP=y
CONFIG_CMD_USB_MASS_STORAGE=y
CONFIG_CMD_DHCP=y
CONFIG_CMD_MII=y
diff --git a/include/configs/pico-imx6ul.h b/include/configs/pico-imx6ul.h
index 1a148bf1a6..14d5cc3ddb 100644
--- a/include/configs/pico-imx6ul.h
+++ b/include/configs/pico-imx6ul.h
@@ -12,6 +12,7 @@
#include <linux/sizes.h>
#include "mx6_common.h"
#include <asm/mach-imx/gpio.h>
+#include "imx6_spl.h"
/* Network support */
--
2.18.0
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