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-rw-r--r--board/xsengine/lowlevel_init.S221
1 files changed, 0 insertions, 221 deletions
diff --git a/board/xsengine/lowlevel_init.S b/board/xsengine/lowlevel_init.S
deleted file mode 100644
index 0d94ab6..0000000
--- a/board/xsengine/lowlevel_init.S
+++ /dev/null
@@ -1,221 +0,0 @@
-#include <config.h>
-#include <version.h>
-#include <asm/arch/pxa-regs.h>
-
-DRAM_SIZE: .long CONFIG_SYS_DRAM_SIZE
-
-.globl lowlevel_init
-lowlevel_init:
-
- mov r10, lr
-
-/* ---- GPIO INITIALISATION ---- */
-/* Set up GPIO pins first (3 groups [31:0] [63:32] [80:64]) */
-
- /* General purpose set registers */
- ldr r0, =GPSR0
- ldr r1, =CONFIG_SYS_GPSR0_VAL
- str r1, [r0]
- ldr r0, =GPSR1
- ldr r1, =CONFIG_SYS_GPSR1_VAL
- str r1, [r0]
- ldr r0, =GPSR2
- ldr r1, =CONFIG_SYS_GPSR2_VAL
- str r1, [r0]
-
- /* General purpose clear registers */
- ldr r0, =GPCR0
- ldr r1, =CONFIG_SYS_GPCR0_VAL
- str r1, [r0]
- ldr r0, =GPCR1
- ldr r1, =CONFIG_SYS_GPCR1_VAL
- str r1, [r0]
- ldr r0, =GPCR2
- ldr r1, =CONFIG_SYS_GPCR2_VAL
- str r1, [r0]
-
- /* General rising edge registers */
- ldr r0, =GRER0
- ldr r1, =CONFIG_SYS_GRER0_VAL
- str r1, [r0]
- ldr r0, =GRER1
- ldr r1, =CONFIG_SYS_GRER1_VAL
- str r1, [r0]
- ldr r0, =GRER2
- ldr r1, =CONFIG_SYS_GRER2_VAL
- str r1, [r0]
-
- /* General falling edge registers */
- ldr r0, =GFER0
- ldr r1, =CONFIG_SYS_GFER0_VAL
- str r1, [r0]
- ldr r0, =GFER1
- ldr r1, =CONFIG_SYS_GFER1_VAL
- str r1, [r0]
- ldr r0, =GFER2
- ldr r1, =CONFIG_SYS_GFER2_VAL
- str r1, [r0]
-
- /* General edge detect registers */
- ldr r0, =GPDR0
- ldr r1, =CONFIG_SYS_GPDR0_VAL
- str r1, [r0]
- ldr r0, =GPDR1
- ldr r1, =CONFIG_SYS_GPDR1_VAL
- str r1, [r0]
- ldr r0, =GPDR2
- ldr r1, =CONFIG_SYS_GPDR2_VAL
- str r1, [r0]
-
- /* General alternate function registers */
- ldr r0, =GAFR0_L /* [0:15] */
- ldr r1, =CONFIG_SYS_GAFR0_L_VAL
- str r1, [r0]
- ldr r0, =GAFR0_U /* [31:16] */
- ldr r1, =CONFIG_SYS_GAFR0_U_VAL
- str r1, [r0]
- ldr r0, =GAFR1_L /* [47:32] */
- ldr r1, =CONFIG_SYS_GAFR1_L_VAL
- str r1, [r0]
- ldr r0, =GAFR1_U /* [63:48] */
- ldr r1, =CONFIG_SYS_GAFR1_U_VAL
- str r1, [r0]
- ldr r0, =GAFR2_L /* [79:64] */
- ldr r1, =CONFIG_SYS_GAFR2_L_VAL
- str r1, [r0]
- ldr r0, =GAFR2_U /* [80] */
- ldr r1, =CONFIG_SYS_GAFR2_U_VAL
- str r1, [r0]
-
- /* General purpose direction registers */
- ldr r0, =GPDR0
- ldr r1, =CONFIG_SYS_GPDR0_VAL
- str r1, [r0]
- ldr r0, =GPDR1
- ldr r1, =CONFIG_SYS_GPDR1_VAL
- str r1, [r0]
- ldr r0, =GPDR2
- ldr r1, =CONFIG_SYS_GPDR2_VAL
- str r1, [r0]
-
- /* Power manager sleep status */
- ldr r0, =PSSR
- ldr r1, =CONFIG_SYS_PSSR_VAL
- str r1, [r0]
-
-/* ---- MEMORY INITIALISATION ---- */
-/* Initialize Memory Controller, see PXA250 Operating System Developer's Guide */
-/* pause for 200 uSecs- allow internal clocks to settle */
- ldr r3, =OSCR /* reset the OS Timer Count to zero */
- mov r2, #0
- str r2, [r3]
- ldr r4, =0x300 /* really 0x2E1 is about 200usec, so 0x300 should be plenty */
-1:
- ldr r2, [r3]
- cmp r4, r2
- bgt 1b
-
-mem_init:
-/* get memory controller base address */
- ldr r1, =MEMC_BASE
-
-/* ---- FLASH INITIALISATION ---- */
-/* Write MSC0 and read back to ensure data change is accepted by cpu */
- ldr r2, =CONFIG_SYS_MSC0_VAL
- str r2, [r1, #MSC0_OFFSET]
- ldr r2, [r1, #MSC0_OFFSET]
-
-/* ---- SDRAM INITIALISATION ---- */
-/* get the MDREFR settings */
- ldr r2, =CONFIG_SYS_MDREFR_VAL
- str r2, [r1, #MDREFR_OFFSET]
-
-/* fetch platform value of MDCNFG */
- ldr r2, =CONFIG_SYS_MDCNFG_VAL
-
-/* disable all sdram banks */
- bic r2, r2, #(MDCNFG_DE0 | MDCNFG_DE1)
- bic r2, r2, #(MDCNFG_DE2 | MDCNFG_DE3)
-
-/* write initial value of MDCNFG, w/o enabling sdram banks */
- str r2, [r1, #MDCNFG_OFFSET]
-
-/* pause for 200 uSecs */
- ldr r3, =OSCR /* reset the OS Timer Count to zero */
- mov r2, #0
- str r2, [r3]
- ldr r4, =0x300 /* about 200 usec */
-1:
- ldr r2, [r3]
- cmp r4, r2
- bgt 1b
-
-/* Access memory *not yet enabled* for CBR refresh cycles (8) */
-/* CBR is generated for all banks */
-
- ldr r2, =CONFIG_SYS_DRAM_BASE
- str r2, [r2]
- str r2, [r2]
- str r2, [r2]
- str r2, [r2]
- str r2, [r2]
- str r2, [r2]
- str r2, [r2]
- str r2, [r2]
-
-/* get memory controller base address */
- ldr r2, =MEMC_BASE
-
-/* Enable SDRAM bank 0 in MDCNFG register */
- ldr r2, [r1, #MDCNFG_OFFSET]
- orr r2, r2, #MDCNFG_DE0
- str r2, [r1, #MDCNFG_OFFSET]
-
-/* write MDMRS to trigger an MSR command to all enabled SDRAM banks */
- ldr r2, =CONFIG_SYS_MDMRS_VAL
- str r2, [r1, #MDMRS_OFFSET]
-
-/* ---- INTERRUPT INITIALISATION ---- */
-/* Disable (mask) all interrupts at the interrupt controller */
-/* clear the interrupt level register (use IRQ, not FIQ) */
- mov r1, #0
- ldr r2, =ICLR
- str r1, [r2]
-
-/* Set interrupt mask register */
- ldr r1, =CONFIG_SYS_ICMR_VAL
- ldr r2, =ICMR
- str r1, [r2]
-
-/* ---- CLOCK INITIALISATION ---- */
-/* Disable the peripheral clocks, and set the core clock */
-
-/* Turn Off ALL on-chip peripheral clocks for re-configuration */
- ldr r1, =CKEN
- mov r2, #0
- str r2, [r1]
-
-/* set core clocks */
- ldr r2, =CONFIG_SYS_CCCR_VAL
- ldr r1, =CCCR
- str r2, [r1]
-
-#ifdef ENABLE32KHZ
-/* enable the 32Khz oscillator for RTC and PowerManager */
- ldr r1, =OSCC
- mov r2, #OSCC_OON
- str r2, [r1]
-
-/* NOTE: spin here until OSCC.OOK get set, meaning the PLL has settled. */
-60:
- ldr r2, [r1]
- ands r2, r2, #1
- beq 60b
-#endif
-
-/* Turn on needed clocks */
- ldr r1, =CKEN
- ldr r2, =CONFIG_SYS_CKEN_VAL
- str r2, [r1]
-
- mov pc, r10