ARM:AM33XX: Add SPL support for AM335X EVM

[karo-tx-uboot.git] / arch / arm / cpu / armv7 / am33xx / board.c

diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
index 312643c777208d4b6d19f2592ab124b149b1ec4b..d64ae6936c5924e948026cbd0b770901b8131d02 100644 (file)
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -19,19 +19,31 @@
 #include <common.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
+#include <asm/arch/omap.h>
 #include <asm/arch/ddr_defs.h>
 #include <asm/arch/clock.h>
+#include <asm/arch/mmc_host_def.h>
+#include <asm/arch/common_def.h>
 #include <asm/io.h>
+#include <asm/omap_common.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
 struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
 struct gptimer *timer_base = (struct gptimer *)CONFIG_SYS_TIMERBASE;
+struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;
+
+/* UART Defines */
+#ifdef CONFIG_SPL_BUILD
+#define UART_RESET             (0x1 << 1)
+#define UART_CLK_RUNNING_MASK  0x1
+#define UART_SMART_IDLE_EN     (0x1 << 0x3)
+#endif
 
 /*
  * early system init of muxing and clocks.
  */
-void s_init(u32 in_ddr)
+void s_init(void)
 {
        /* WDT1 is already running when the bootloader gets control
         * Disable it to avoid "random" resets
@@ -43,12 +55,37 @@ void s_init(u32 in_ddr)
        while (readl(&wdtimer->wdtwwps) != 0x0)
                ;
 
+#ifdef CONFIG_SPL_BUILD
        /* Setup the PLLs and the clocks for the peripherals */
-#ifdef CONFIG_SETUP_PLL
        pll_init();
+
+       /* UART softreset */
+       u32 regVal;
+
+       enable_uart0_pin_mux();
+
+       regVal = readl(&uart_base->uartsyscfg);
+       regVal |= UART_RESET;
+       writel(regVal, &uart_base->uartsyscfg);
+       while ((readl(&uart_base->uartsyssts) &
+               UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK)
+               ;
+
+       /* Disable smart idle */
+       regVal = readl(&uart_base->uartsyscfg);
+       regVal |= UART_SMART_IDLE_EN;
+       writel(regVal, &uart_base->uartsyscfg);
+
+       /* Initialize the Timer */
+       init_timer();
+
+       preloader_console_init();
+
+       config_ddr();
 #endif
-       if (!in_ddr)
-               config_ddr();
+
+       /* Enable MMC0 */
+       enable_mmc0_pin_mux();
 }
 
 /* Initialize timer */
@@ -71,3 +108,9 @@ int board_mmc_init(bd_t *bis)
        return omap_mmc_init(0);
 }
 #endif
+
+void setup_clocks_for_console(void)
+{
+       /* Not yet implemented */
+       return;
+}