ARM: imx: Factor common code out of Data Modul i.MX8M Mini eDM SBC
Pull common.c into common subdirectory of the board file,
since this code can be reused by other Data Modul SBCs.
Drop the include of lpddr4_timing.h, which is unneeded.
Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/board/data_modul/common/common.c b/board/data_modul/common/common.c
new file mode 100644
index 0000000..bf9a114
--- /dev/null
+++ b/board/data_modul/common/common.c
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2022 Marek Vasut <marex@denx.de>
+ */
+
+#include <common.h>
+#include <asm-generic/gpio.h>
+#include <asm-generic/sections.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/ddr.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <common.h>
+#include <dm/uclass.h>
+#include <hang.h>
+#include <i2c_eeprom.h>
+#include <image.h>
+#include <init.h>
+#include <net.h>
+#include <spl.h>
+
+#include <dm/uclass.h>
+#include <dm/device.h>
+#include <dm/uclass-internal.h>
+#include <dm/device-internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
+
+u8 dmo_get_memcfg(void)
+{
+ struct gpio_desc gpio[4];
+ u8 memcfg = 0;
+ ofnode node;
+ int i, ret;
+
+ node = ofnode_path("/config");
+ if (!ofnode_valid(node)) {
+ printf("%s: no /config node?\n", __func__);
+ return BIT(2) | BIT(0);
+ }
+
+ ret = gpio_request_list_by_name_nodev(node,
+ "dmo,ram-coding-gpios",
+ gpio, ARRAY_SIZE(gpio),
+ GPIOD_IS_IN);
+ for (i = 0; i < ret; i++)
+ memcfg |= !!dm_gpio_get_value(&(gpio[i])) << i;
+
+ gpio_free_list_nodev(gpio, ret);
+
+ return memcfg;
+}
+
+int board_phys_sdram_size(phys_size_t *size)
+{
+ u8 memcfg = dmo_get_memcfg();
+
+ *size = (4ULL >> ((memcfg >> 1) & 0x3)) * SZ_1G;
+
+ return 0;
+}
+
+#ifdef CONFIG_SPL_BUILD
+static void data_modul_imx_edm_sbc_early_init_f(const iomux_v3_cfg_t wdog_pad)
+{
+ struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+
+ imx_iomux_v3_setup_pad(wdog_pad | MUX_PAD_CTRL(WDOG_PAD_CTRL));
+
+ set_wdog_reset(wdog);
+}
+
+__weak int data_modul_imx_edm_sbc_board_power_init(void)
+{
+ return 0;
+}
+
+static void spl_dram_init(struct dram_timing_info *dram_timing_info[8])
+{
+ u8 memcfg = dmo_get_memcfg();
+ int i;
+
+ printf("DDR: %d GiB x%d [0x%x]\n",
+ /* 0..4 GiB, 1..2 GiB, 0..1 GiB */
+ 4 >> ((memcfg >> 1) & 0x3),
+ /* 0..x32, 1..x16 */
+ 32 >> (memcfg & BIT(0)),
+ memcfg);
+
+ if (!dram_timing_info[memcfg]) {
+ printf("Unsupported DRAM strapping, trying lowest supported. MEMCFG=0x%x\n",
+ memcfg);
+ for (i = 7; i >= 0; i--)
+ if (dram_timing_info[i]) /* Configuration found */
+ break;
+ }
+
+ ddr_init(dram_timing_info[memcfg]);
+}
+
+void dmo_board_init_f(const iomux_v3_cfg_t wdog_pad,
+ struct dram_timing_info *dram_timing_info[8])
+{
+ struct udevice *dev;
+ int ret;
+
+ icache_enable();
+
+ arch_cpu_init();
+
+ init_uart_clk(2);
+
+ data_modul_imx_edm_sbc_early_init_f(wdog_pad);
+
+ /* Clear the BSS. */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ ret = spl_early_init();
+ if (ret) {
+ debug("spl_early_init() failed: %d\n", ret);
+ hang();
+ }
+
+ preloader_console_init();
+
+ ret = uclass_get_device_by_name(UCLASS_CLK,
+ "clock-controller@30380000",
+ &dev);
+ if (ret < 0) {
+ printf("Failed to find clock node. Check device tree\n");
+ hang();
+ }
+
+ enable_tzc380();
+
+ data_modul_imx_edm_sbc_board_power_init();
+
+ /* DDR initialization */
+ spl_dram_init(dram_timing_info);
+
+ board_init_r(NULL, 0);
+}
+#else
+void dmo_setup_boot_device(void)
+{
+ int boot_device = get_boot_device();
+ char *devnum;
+
+ devnum = env_get("devnum");
+ if (devnum) /* devnum is already set */
+ return;
+
+ if (boot_device == MMC3_BOOT) /* eMMC */
+ env_set_ulong("devnum", 0);
+ else
+ env_set_ulong("devnum", 1);
+}
+
+void dmo_setup_mac_address(void)
+{
+ unsigned char enetaddr[6];
+ struct udevice *dev;
+ int off, ret;
+
+ ret = eth_env_get_enetaddr("ethaddr", enetaddr);
+ if (ret) /* ethaddr is already set */
+ return;
+
+ off = fdt_path_offset(gd->fdt_blob, "eeprom0");
+ if (off < 0) {
+ printf("%s: No eeprom0 path offset\n", __func__);
+ return;
+ }
+
+ ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev);
+ if (ret) {
+ printf("Cannot find EEPROM!\n");
+ return;
+ }
+
+ ret = i2c_eeprom_read(dev, 0xb0, enetaddr, 0x6);
+ if (ret) {
+ printf("Error reading configuration EEPROM!\n");
+ return;
+ }
+
+ if (is_valid_ethaddr(enetaddr))
+ eth_env_set_enetaddr("ethaddr", enetaddr);
+}
+#endif