diff options
Diffstat (limited to 'arch/arm/boards/eukrea_cpuimx27/lowlevel_init.S')
| -rw-r--r-- | arch/arm/boards/eukrea_cpuimx27/lowlevel_init.S | 77 |
1 files changed, 46 insertions, 31 deletions
diff --git a/arch/arm/boards/eukrea_cpuimx27/lowlevel_init.S b/arch/arm/boards/eukrea_cpuimx27/lowlevel_init.S index 1983d480f9..4ee6efb84e 100644 --- a/arch/arm/boards/eukrea_cpuimx27/lowlevel_init.S +++ b/arch/arm/boards/eukrea_cpuimx27/lowlevel_init.S @@ -1,6 +1,7 @@ #include <config.h> #include <asm-generic/memory_layout.h> -#include <mach/imx-regs.h> +#include <mach/imx27-regs.h> +#include <mach/esdctl.h> #include <asm/barebox-arm-head.h> #define writel(val, reg) \ @@ -9,10 +10,10 @@ str r1, [r0]; #if defined CONFIG_EUKREA_CPUIMX27_SDRAM_256MB -#define ROWS0 ESDCTL_ROW14 +#define ROWS0 ESDCTL0_ROW14 #define CFG0 0x0029572D #elif defined CONFIG_EUKREA_CPUIMX27_SDRAM_128MB -#define ROWS0 ESDCTL_ROW13 +#define ROWS0 ESDCTL0_ROW13 #define CFG0 0x00095728 #endif @@ -22,20 +23,26 @@ /* * DDR on CSD0 */ - writel(0x0000000C, 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(CFG0, ESDCFG0) - - writel(ESDCTL0_VAL | ESDCTL0_SMODE_PRECHARGE, ESDCTL0) /* precharge CSD0 all banks */ + /* Enable DDR SDRAM operation */ + writel(0x0000000C, 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(CFG0, 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 @@ -45,7 +52,8 @@ 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] @@ -56,7 +64,9 @@ #endif 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" @@ -67,23 +77,26 @@ 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) /* disable mpll/spll */ - ldr r0, =CSCR + ldr r0, =MX27_CCM_BASE_ADDR + MX27_CSCR ldr r1, [r0] bic r1, r1, #0x03 str r1, [r0] - + /* * pll clock initialization - see section 3.4.3 of the i.MX27 manual */ - writel(0x00331C23, MPCTL0) /* MPLL = 399 MHz */ - writel(0x040C2403, SPCTL0) /* SPLL = 240 MHz */ - writel(0x33F38107 | CSCR_MPLL_RESTART | CSCR_SPLL_RESTART, CSCR) + /* MPLL = 399 MHz */ + writel(0x00331C23, MX27_CCM_BASE_ADDR + MX27_MPCTL0) + /* SPLL = 240 MHz */ + writel(0x040C2403, MX27_CCM_BASE_ADDR + MX27_SPCTL0) + writel(0x33F38107 | MX27_CSCR_MPLL_RESTART | MX27_CSCR_SPLL_RESTART, + MX27_CCM_BASE_ADDR + MX27_CSCR) /* add some delay here */ mov r1, #0x1000 @@ -91,12 +104,14 @@ reset: bne 1b /* clock gating enable */ - writel(0x00050f08, GPCR) + writel(0x00050f08, MX27_SYSCTRL_BASE_ADDR + MX27_GPCR) /* peripheral clock divider */ - writel(0x130400c3, PCDR0) /* FIXME */ - writel(0x09030208, PCDR1) /* PERDIV1=08 @133 MHz */ - /* PERDIV1=04 @266 MHz */ + /* FIXME */ + writel(0x130400c3, MX27_CCM_BASE_ADDR + MX27_PCDR0) + /* PERDIV1=08 @133 MHz */ + writel(0x09030208, MX27_CCM_BASE_ADDR + MX27_PCDR1) + /* PERDIV1=04 @266 MHz */ /* skip sdram initialization if we run from ram */ cmp pc, #0xa0000000 |