diff options
Diffstat (limited to 'arch/arm/boards/phycard-i.MX27/lowlevel_init.S')
| -rw-r--r-- | arch/arm/boards/phycard-i.MX27/lowlevel_init.S | 70 |
1 files changed, 42 insertions, 28 deletions
diff --git a/arch/arm/boards/phycard-i.MX27/lowlevel_init.S b/arch/arm/boards/phycard-i.MX27/lowlevel_init.S index 3c36889e7a..8f0000f822 100644 --- a/arch/arm/boards/phycard-i.MX27/lowlevel_init.S +++ b/arch/arm/boards/phycard-i.MX27/lowlevel_init.S @@ -5,7 +5,7 @@ */ #include <config.h> -#include <mach/imx-regs.h> +#include <mach/imx27-regs.h> #include <mach/imx-pll.h> #include <asm/barebox-arm-head.h> @@ -21,20 +21,26 @@ /* * DDR on CSD0 */ - writel(0x00000008, ESDMISC) /* Enable DDR SDRAM operation */ - - writel(0x55555555, DSCR(3)) /* Set the driving strength */ - writel(0x55555555, DSCR(5)) - writel(0x55555555, DSCR(6)) - writel(0x00005005, DSCR(7)) - writel(0x15555555, DSCR(8)) - - writel(0x00000004, ESDMISC) /* Initial reset */ - writel(0x006ac73a, ESDCFG0) - - writel(ESDCTL0_VAL | ESDCTL0_SMODE_PRECHARGE, ESDCTL0) /* precharge CSD0 all banks */ + /* Enable DDR SDRAM operation */ + writel(0x00000008, MX27_ESDCTL_BASE_ADDR + IMX_ESDMISC) + + /* Set the driving strength */ + writel(0x55555555, MX27_SYSCTRL_BASE_ADDR + MX27_DSCR(3)) + writel(0x55555555, MX27_SYSCTRL_BASE_ADDR + MX27_DSCR(5)) + writel(0x55555555, MX27_SYSCTRL_BASE_ADDR + MX27_DSCR(6)) + writel(0x00005005, MX27_SYSCTRL_BASE_ADDR + MX27_DSCR(7)) + writel(0x15555555, MX27_SYSCTRL_BASE_ADDR + MX27_DSCR(8)) + + /* Initial reset */ + writel(0x00000004, MX27_ESDCTL_BASE_ADDR + IMX_ESDMISC) + writel(0x006ac73a, MX27_ESDCTL_BASE_ADDR + IMX_ESDCFG0) + + /* precharge CSD0 all banks */ + writel(ESDCTL0_VAL | ESDCTL0_SMODE_PRECHARGE, + MX27_ESDCTL_BASE_ADDR + IMX_ESDCTL0) writel(0x00000000, 0xA0000F00) /* CSD0 precharge address (A10 = 1) */ - writel(ESDCTL0_VAL | ESDCTL0_SMODE_AUTO_REFRESH, ESDCTL0) + writel(ESDCTL0_VAL | ESDCTL0_SMODE_AUTO_REFRESH, + MX27_ESDCTL_BASE_ADDR + IMX_ESDCTL0) ldr r0, =0xa0000f00 mov r1, #0 @@ -44,14 +50,17 @@ subs r2, #1 bne 1b - writel(ESDCTL0_VAL | ESDCTL0_SMODE_LOAD_MODE, ESDCTL0) + writel(ESDCTL0_VAL | ESDCTL0_SMODE_LOAD_MODE, + MX27_ESDCTL_BASE_ADDR + IMX_ESDCTL0) ldr r0, =0xA0000033 mov r1, #0xda strb r1, [r0] ldr r0, =0xA1000000 mov r1, #0xff strb r1, [r0] - writel(ESDCTL0_VAL | ESDCTL0_DSIZ_31_0 | ESDCTL0_REF4 | ESDCTL0_BL | ESDCTL0_SMODE_NORMAL, ESDCTL0) + writel(ESDCTL0_VAL | ESDCTL0_DSIZ_31_0 | ESDCTL0_REF4 | + ESDCTL0_BL | ESDCTL0_SMODE_NORMAL, + MX27_ESDCTL_BASE_ADDR + IMX_ESDCTL0) .endm .section ".text_bare_init","ax" @@ -61,10 +70,10 @@ reset: common_reset r0 /* ahb lite ip interface */ - writel(0x20040304, AIPI1_PSR0) - writel(0xDFFBFCFB, AIPI1_PSR1) - writel(0x00000000, AIPI2_PSR0) - writel(0xFFFFFFFF, AIPI2_PSR1) + writel(0x20040304, MX27_AIPI_BASE_ADDR + MX27_AIPI1_PSR0) + writel(0xDFFBFCFB, MX27_AIPI_BASE_ADDR + MX27_AIPI1_PSR1) + writel(0x00000000, MX27_AIPI_BASE_ADDR + MX27_AIPI2_PSR0) + writel(0xFFFFFFFF, MX27_AIPI_BASE_ADDR + MX27_AIPI2_PSR1) /* skip sdram initialization if we run from ram */ cmp pc, #0xa0000000 @@ -75,21 +84,26 @@ reset: b board_init_lowlevel_return 1: + /* 399 MHz */ writel(IMX_PLL_PD(0) | IMX_PLL_MFD(51) | IMX_PLL_MFI(7) | - IMX_PLL_MFN(35), MPCTL0) /* 399 MHz */ + IMX_PLL_MFN(35), MX27_CCM_BASE_ADDR + MX27_MPCTL0) + /* SPLL = 2 * 26 * 4.61538 MHz = 240 MHz */ writel(IMX_PLL_PD(1) | IMX_PLL_MFD(12) | IMX_PLL_MFI(9) | - IMX_PLL_MFN(3), SPCTL0) /* SPLL = 2 * 26 * 4.61538 MHz = 240 MHz */ - - writel(CSCR_MPLL_RESTART | CSCR_SPLL_RESTART | CSCR_ARM_SRC_MPLL | - CSCR_MCU_SEL | CSCR_SP_SEL | CSCR_FPM_EN | CSCR_MPEN | - CSCR_SPEN | CSCR_ARM_DIV(0) | CSCR_AHB_DIV(1) | CSCR_USB_DIV(3) | - CSCR_SD_CNT(3) | CSCR_SSI2_SEL | CSCR_SSI1_SEL | CSCR_H264_SEL | - CSCR_MSHC_SEL, CSCR) + IMX_PLL_MFN(3), MX27_CCM_BASE_ADDR + MX27_SPCTL0) + + writel(MX27_CSCR_MPLL_RESTART | MX27_CSCR_SPLL_RESTART | + MX27_CSCR_ARM_SRC_MPLL | MX27_CSCR_MCU_SEL | + MX27_CSCR_SP_SEL | MX27_CSCR_FPM_EN | + MX27_CSCR_MPEN | MX27_CSCR_SPEN | MX27_CSCR_ARM_DIV(0) | + MX27_CSCR_AHB_DIV(1) | MX27_CSCR_USB_DIV(3) | + MX27_CSCR_SD_CNT(3) | MX27_CSCR_SSI2_SEL | + MX27_CSCR_SSI1_SEL | MX27_CSCR_H264_SEL | + MX27_CSCR_MSHC_SEL, MX27_CCM_BASE_ADDR + MX27_CSCR) sdram_init |