ARM: i.MX: provide access to reset cause through get_imx_reset_cause()

[karo-tx-uboot.git] / arch / arm / imx-common / cpu.c

diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
index 09fc22760d0c6e973359f121f92c63feed26793d..a39e053c570c486800ae64deacb15c9307e2899a 100644 (file)
--- a/arch/arm/imx-common/cpu.c
+++ b/arch/arm/imx-common/cpu.c
@@ -17,18 +17,23 @@
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/crm_regs.h>
 #include <ipu_pixfmt.h>
+#include <thermal.h>
+#include <sata.h>
 
 #ifdef CONFIG_FSL_ESDHC
 #include <fsl_esdhc.h>
 #endif
 
-char *get_reset_cause(void)
+static u32 reset_cause = -1;
+
+static char *get_reset_cause(void)
 {
        u32 cause;
        struct src *src_regs = (struct src *)SRC_BASE_ADDR;
 
        cause = readl(&src_regs->srsr);
        writel(cause, &src_regs->srsr);
+       reset_cause = cause;
 
        switch (cause) {
        case 0x00001:
@@ -51,8 +56,13 @@ char *get_reset_cause(void)
        }
 }
 
-#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
-#if defined(CONFIG_MX53)
+u32 get_imx_reset_cause(void)
+{
+       return reset_cause;
+}
+
+#if defined(CONFIG_SOC_MX53) || defined(CONFIG_SOC_MX6)
+#if defined(CONFIG_SOC_MX53)
 #define MEMCTL_BASE    ESDCTL_BASE_ADDR
 #else
 #define MEMCTL_BASE    MMDC_P0_BASE_ADDR
@@ -134,6 +144,11 @@ int print_cpuinfo(void)
 {
        u32 cpurev;
 
+#if defined(CONFIG_SOC_MX6) && defined(CONFIG_IMX6_THERMAL)
+       struct udevice *thermal_dev;
+       int cpu_tmp, ret;
+#endif
+
        cpurev = get_cpu_rev();
 
        printf("CPU:   Freescale i.MX%s rev%d.%d at %d MHz\n",
@@ -141,6 +156,21 @@ int print_cpuinfo(void)
                (cpurev & 0x000F0) >> 4,
                (cpurev & 0x0000F) >> 0,
                mxc_get_clock(MXC_ARM_CLK) / 1000000);
+
+#if defined(CONFIG_SOC_MX6) && defined(CONFIG_IMX6_THERMAL)
+       ret = uclass_get_device(UCLASS_THERMAL, 0, &thermal_dev);
+       if (!ret) {
+               ret = thermal_get_temp(thermal_dev, &cpu_tmp);
+
+               if (!ret)
+                       printf("CPU:   Temperature %d C\n", cpu_tmp);
+               else
+                       printf("CPU:   Temperature: invalid sensor data\n");
+       } else {
+               printf("CPU:   Temperature: Can't find sensor device\n");
+       }
+#endif
+
        printf("Reset cause: %s\n", get_reset_cause());
        return 0;
 }
@@ -180,10 +210,47 @@ u32 get_ahb_clk(void)
        return get_periph_clk() / (ahb_podf + 1);
 }
 
-#if defined(CONFIG_VIDEO_IPUV3)
 void arch_preboot_os(void)
 {
+#if defined(CONFIG_CMD_SATA)
+       sata_stop();
+#if defined(CONFIG_SOC_MX6)
+       disable_sata_clock();
+#endif
+#endif
+#if defined(CONFIG_VIDEO_IPUV3)
        /* disable video before launching O/S */
        ipuv3_fb_shutdown();
-}
 #endif
+}
+
+void set_chipselect_size(int const cs_size)
+{
+       unsigned int reg;
+       struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+       reg = readl(&iomuxc_regs->gpr[1]);
+
+       switch (cs_size) {
+       case CS0_128:
+               reg &= ~0x7;    /* CS0=128MB, CS1=0, CS2=0, CS3=0 */
+               reg |= 0x5;
+               break;
+       case CS0_64M_CS1_64M:
+               reg &= ~0x3F;   /* CS0=64MB, CS1=64MB, CS2=0, CS3=0 */
+               reg |= 0x1B;
+               break;
+       case CS0_64M_CS1_32M_CS2_32M:
+               reg &= ~0x1FF;  /* CS0=64MB, CS1=32MB, CS2=32MB, CS3=0 */
+               reg |= 0x4B;
+               break;
+       case CS0_32M_CS1_32M_CS2_32M_CS3_32M:
+               reg &= ~0xFFF;  /* CS0=32MB, CS1=32MB, CS2=32MB, CS3=32MB */
+               reg |= 0x249;
+               break;
+       default:
+               printf("Unknown chip select size: %d\n", cs_size);
+               break;
+       }
+
+       writel(reg, &iomuxc_regs->gpr[1]);
+}