}
}
+#define RTC_PERSISTENT0_CLK32_MASK (RTC_PERSISTENT0_CLOCKSOURCE | \
+ RTC_PERSISTENT0_XTAL32KHZ_PWRUP)
+static u32 boot_cause __attribute__((section("data")));
+
int board_early_init_f(void)
{
+ struct mxs_rtc_regs *rtc_regs = (void *)MXS_RTC_BASE;
+ u32 rtc_stat;
+ int timeout = 5000;
+
random_init();
/* IO0 clock at 480MHz */
gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
mxs_iomux_setup_multiple_pads(tx28_pads, ARRAY_SIZE(tx28_pads));
+
+ while ((rtc_stat = readl(&rtc_regs->hw_rtc_stat)) &
+ RTC_STAT_STALE_REGS_PERSISTENT0) {
+ if (timeout-- < 0)
+ return 0;
+ udelay(1);
+ }
+ boot_cause = readl(&rtc_regs->hw_rtc_persistent0);
+ if ((boot_cause & RTC_PERSISTENT0_CLK32_MASK) !=
+ RTC_PERSISTENT0_CLK32_MASK) {
+ if (boot_cause & RTC_PERSISTENT0_CLOCKSOURCE)
+ goto rtc_err;
+ writel(RTC_PERSISTENT0_CLK32_MASK,
+ &rtc_regs->hw_rtc_persistent0_set);
+ }
+ return 0;
+
+rtc_err:
+ serial_puts("Inconsistent value in RTC_PERSISTENT0 register; power-on-reset required\n");
return 0;
}
return 0;
}
+#define BOOT_CAUSE_MASK (RTC_PERSISTENT0_EXTERNAL_RESET | \
+ RTC_PERSISTENT0_ALARM_WAKE | \
+ RTC_PERSISTENT0_THERMAL_RESET)
+
+static void thermal_init(void)
+{
+ struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
+ struct mxs_clkctrl_regs *clkctrl_regs = (void *)MXS_CLKCTRL_BASE;
+
+ writel(POWER_THERMAL_LOW_POWER | POWER_THERMAL_OFFSET_ADJ_ENABLE |
+ POWER_THERMAL_OFFSET_ADJ_OFFSET(3),
+ &power_regs->hw_power_thermal);
+
+ writel(CLKCTRL_RESET_EXTERNAL_RESET_ENABLE |
+ CLKCTRL_RESET_THERMAL_RESET_ENABLE,
+ &clkctrl_regs->hw_clkctrl_reset);
+}
+
int checkboard(void)
{
- printf("Board: Ka-Ro TX28-4%sxx\n", TX28_MOD_SUFFIX);
+ struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
+ u32 pwr_sts = readl(&power_regs->hw_power_sts);
+ u32 pwrup_src = (pwr_sts >> 24) & 0x3f;
+ const char *dlm = "";
+
+ printf("Board: Ka-Ro TX28-4%sx%d\n", TX28_MOD_SUFFIX,
+ CONFIG_SDRAM_SIZE / SZ_128M);
+
+ printf("POWERUP Source: ");
+ if (pwrup_src & (3 << 0)) {
+ printf("%sPSWITCH %s voltage", dlm,
+ pwrup_src & (1 << 1) ? "HIGH" : "MID");
+ dlm = " | ";
+ }
+ if (pwrup_src & (1 << 4)) {
+ printf("%sRTC", dlm);
+ dlm = " | ";
+ }
+ if (pwrup_src & (1 << 5)) {
+ printf("%s5V", dlm);
+ dlm = " | ";
+ }
+ printf("\n");
+
+ if (boot_cause & BOOT_CAUSE_MASK) {
+ dlm="";
+ printf("Last boot cause: ");
+ if (boot_cause & RTC_PERSISTENT0_EXTERNAL_RESET) {
+ printf("%sEXTERNAL", dlm);
+ dlm = " | ";
+ }
+ if (boot_cause & RTC_PERSISTENT0_THERMAL_RESET) {
+ printf("%sTHERMAL", dlm);
+ dlm = " | ";
+ }
+ if (*dlm != '\0')
+ printf(" RESET");
+ if (boot_cause & RTC_PERSISTENT0_ALARM_WAKE) {
+ printf("%sALARM WAKE", dlm);
+ dlm = " | ";
+ }
+ printf("\n");
+ }
+
+ while (pwr_sts & POWER_STS_THERMAL_WARNING) {
+ static int first = 1;
+
+ if (first) {
+ printf("CPU too hot to boot\n");
+ first = 0;
+ }
+ if (tstc())
+ break;
+ pwr_sts = readl(&power_regs->hw_power_sts);
+ }
+
+ if (!(boot_cause & RTC_PERSISTENT0_THERMAL_RESET))
+ thermal_init();
+
return 0;
}
#include <jffs2/jffs2.h>
#include <mtd_node.h>
struct node_info tx28_nand_nodes[] = {
- { "gpmi-nand", MTD_DEV_TYPE_NAND, },
+ { "fsl,imx28-gpmi-nand", MTD_DEV_TYPE_NAND, },
};
#else
#define fdt_fixup_mtdparts(b,n,c) do { } while (0)
#endif
-static void tx28_fixup_flexcan(void *blob)
+static int flexcan_enabled(void *blob)
{
- karo_fdt_del_prop(blob, "fsl,imx28-flexcan", 0x80032000, "transceiver-switch");
- karo_fdt_del_prop(blob, "fsl,imx28-flexcan", 0x80034000, "transceiver-switch");
+ const char *status;
+ int off = fdt_path_offset(blob, "can0");
+
+ if (off < 0) {
+ printf("node 'can0' not found\n");
+ } else {
+ status = fdt_getprop(blob, off, "status", NULL);
+ if (status && strcmp(status, "okay") == 0) {
+ printf("can0 is enabled\n");
+ return 1;
+ }
+ }
+ off = fdt_path_offset(blob, "can1");
+ if (off < 0) {
+ printf("node 'can1' not found\n");
+ return 0;
+ }
+ status = fdt_getprop(blob, off, "status", NULL);
+ if (status && strcmp(status, "okay") == 0) {
+ printf("can1 is enabled\n");
+ return 1;
+ }
+ printf("can driver disabled\n");
+ return 0;
+}
+
+static void tx28_set_lcd_pins(void *blob, const char *name)
+{
+ int off = fdt_path_offset(blob, name);
+ u32 ph;
+ const struct fdt_property *pc;
+ int len;
+
+ if (off < 0)
+ return;
+
+ ph = fdt32_to_cpu(fdt_create_phandle(blob, off));
+ if (!ph)
+ return;
+
+ off = fdt_path_offset(blob, "lcdif");
+ if (off < 0)
+ return;
+
+ pc = fdt_get_property(blob, off, "pinctrl-0", &len);
+ if (!pc || len < sizeof(ph))
+ return;
+
+ memcpy((void *)pc->data, &ph, sizeof(ph));
+ fdt_setprop(blob, off, "pinctrl-0", pc->data, len);
+}
+
+static void tx28_fixup_flexcan(void *blob, int stk5_v5)
+{
+ const char *can_xcvr = "disabled";
+
+ if (stk5_v5) {
+ if (flexcan_enabled(blob)) {
+ tx28_set_lcd_pins(blob, "lcdif_23bit_pins_a");
+ can_xcvr = "okay";
+ } else {
+ tx28_set_lcd_pins(blob, "lcdif_24bit_pins_a");
+ }
+ } else {
+ const char *otg_mode = getenv("otg_mode");
+
+ if (otg_mode && (strcmp(otg_mode, "host") == 0))
+ karo_fdt_enable_node(blob, "can1", 0);
+ }
+ fdt_find_and_setprop(blob, "/regulators/can-xcvr", "status",
+ can_xcvr, strlen(can_xcvr) + 1, 1);
}
static void tx28_fixup_fec(void *blob)
void ft_board_setup(void *blob, bd_t *bd)
{
const char *baseboard = getenv("baseboard");
+ int stk5_v5 = baseboard != NULL && (strcmp(baseboard, "stk5-v5") == 0);
#ifdef CONFIG_TX28_S
/* TX28-41xx (aka TX28S) has no external RTC
karo_fdt_remove_node(blob, "ds1339");
karo_fdt_remove_node(blob, "gpio5");
#endif
- if (baseboard != NULL && strcmp(baseboard, "stk5-v5") == 0) {
+ if (stk5_v5) {
karo_fdt_remove_node(blob, "stk5led");
} else {
- tx28_fixup_flexcan(blob);
tx28_fixup_fec(blob);
}
-
- if (baseboard != NULL && strcmp(baseboard, "stk5-v3") == 0) {
- const char *otg_mode = getenv("otg_mode");
-
- if (otg_mode && (strcmp(otg_mode, "device") == 0 ||
- strcmp(otg_mode, "gadget") == 0))
- karo_fdt_enable_node(blob, "can1", 0);
- }
+ tx28_fixup_flexcan(blob, stk5_v5);
fdt_fixup_mtdparts(blob, tx28_nand_nodes, ARRAY_SIZE(tx28_nand_nodes));
fdt_fixup_ethernet(blob);
projects / karo-tx-uboot.git / blobdiff