Merge branch 'master' of git://git.denx.de/u-boot-microblaze

[karo-tx-uboot.git] / arch / arm / cpu / arm926ejs / mx28 / mx28.c

diff --git a/arch/arm/cpu/arm926ejs/mx28/mx28.c b/arch/arm/cpu/arm926ejs/mx28/mx28.c
index 9bfd83bab97c2ec1849c81575d43aaceb3769118..ff25772099b5bccbebaa63cc6189d1d3494c3ee9 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mx28/mx28.c
+++ b/arch/arm/cpu/arm926ejs/mx28/mx28.c
@@ -30,6 +30,7 @@
 #include <asm/errno.h>
 #include <asm/io.h>
 #include <asm/arch/clock.h>
+#include <asm/arch/dma.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
@@ -50,9 +51,16 @@ void reset_cpu(ulong ignored) __attribute__((noreturn));
 
 void reset_cpu(ulong ignored)
 {
-
        struct mx28_rtc_regs *rtc_regs =
                (struct mx28_rtc_regs *)MXS_RTC_BASE;
+       struct mx28_lcdif_regs *lcdif_regs =
+               (struct mx28_lcdif_regs *)MXS_LCDIF_BASE;
+
+       /*
+        * Shut down the LCD controller as it interferes with BootROM boot mode
+        * pads sampling.
+        */
+       writel(LCDIF_CTRL_RUN, &lcdif_regs->hw_lcdif_ctrl_clr);
 
        /* Wait 1 uS before doing the actual watchdog reset */
        writel(1, &rtc_regs->hw_rtc_watchdog);
@@ -63,6 +71,16 @@ void reset_cpu(ulong ignored)
                ;
 }
 
+void enable_caches(void)
+{
+#ifndef CONFIG_SYS_ICACHE_OFF
+       icache_enable();
+#endif
+#ifndef CONFIG_SYS_DCACHE_OFF
+       dcache_enable();
+#endif
+}
+
 int mx28_wait_mask_set(struct mx28_register_32 *reg, uint32_t mask, int timeout)
 {
        while (--timeout) {
@@ -135,7 +153,6 @@ int arch_misc_init(void)
 }
 #endif
 
-#ifdef CONFIG_ARCH_CPU_INIT
 int arch_cpu_init(void)
 {
        struct mx28_clkctrl_regs *clkctrl_regs =
@@ -162,15 +179,23 @@ int arch_cpu_init(void)
         */
        mxs_gpio_init();
 
+#ifdef CONFIG_APBH_DMA
+       /* Start APBH DMA */
+       mxs_dma_init();
+#endif
+
        return 0;
 }
-#endif
 
 #if defined(CONFIG_DISPLAY_CPUINFO)
 int print_cpuinfo(void)
 {
+       struct mx28_spl_data *data = (struct mx28_spl_data *)
+               ((CONFIG_SYS_TEXT_BASE - sizeof(struct mx28_spl_data)) & ~0xf);
+
        printf("Freescale i.MX28 family at %d MHz\n",
                        mxc_get_clock(MXC_ARM_CLK) / 1000000);
+       printf("BOOT:  %s\n", mx28_boot_modes[data->boot_mode_idx].mode);
        return 0;
 }
 #endif
@@ -263,22 +288,16 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
 
 int mx28_dram_init(void)
 {
-       struct mx28_digctl_regs *digctl_regs =
-               (struct mx28_digctl_regs *)MXS_DIGCTL_BASE;
-       uint32_t sz[2];
-
-       sz[0] = readl(&digctl_regs->hw_digctl_scratch0);
-       sz[1] = readl(&digctl_regs->hw_digctl_scratch1);
+       struct mx28_spl_data *data = (struct mx28_spl_data *)
+               ((CONFIG_SYS_TEXT_BASE - sizeof(struct mx28_spl_data)) & ~0xf);
 
-       if (sz[0] != sz[1]) {
+       if (data->mem_dram_size == 0) {
                printf("MX28:\n"
-                       "Error, the RAM size in HW_DIGCTRL_SCRATCH0 and\n"
-                       "HW_DIGCTRL_SCRATCH1 is not the same. Please\n"
-                       "verify these two registers contain valid RAM size!\n");
+                       "Error, the RAM size passed up from SPL is 0!\n");
                hang();
        }
 
-       gd->ram_size = sz[0];
+       gd->ram_size = data->mem_dram_size;
        return 0;
 }