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path: root/board/spear/common/spr_lowlevel_init.S
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Diffstat (limited to 'board/spear/common/spr_lowlevel_init.S')
-rw-r--r--board/spear/common/spr_lowlevel_init.S174
1 files changed, 0 insertions, 174 deletions
diff --git a/board/spear/common/spr_lowlevel_init.S b/board/spear/common/spr_lowlevel_init.S
deleted file mode 100644
index 649488399a..0000000000
--- a/board/spear/common/spr_lowlevel_init.S
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
- * (C) Copyright 2006
- * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <config.h>
-
-/*
- * platform specific initializations are already done in Xloader
- * Initializations already done include
- * DDR, PLLs, IP's clock enable and reset release etc
- */
-.globl lowlevel_init
-lowlevel_init:
- mov pc, lr
-
-/* void setfreq(unsigned int device, unsigned int frequency) */
-.global setfreq
-setfreq:
- stmfd sp!,{r14}
- stmfd sp!,{r0-r12}
-
- mov r8,sp
- ldr sp,SRAM_STACK_V
-
- /* Saving the function arguements for later use */
- mov r4,r0
- mov r5,r1
-
- /* Putting DDR into self refresh */
- ldr r0,DDR_07_V
- ldr r1,[r0]
- ldr r2,DDR_ACTIVE_V
- bic r1, r1, r2
- str r1,[r0]
- ldr r0,DDR_57_V
- ldr r1,[r0]
- ldr r2,CYCLES_MASK_V
- bic r1, r1, r2
- ldr r2,REFRESH_CYCLES_V
- orr r1, r1, r2, lsl #16
- str r1,[r0]
- ldr r0,DDR_07_V
- ldr r1,[r0]
- ldr r2,SREFRESH_MASK_V
- orr r1, r1, r2
- str r1,[r0]
-
- /* flush pipeline */
- b flush
- .align 5
-flush:
- /* Delay to ensure self refresh mode */
- ldr r0,SREFRESH_DELAY_V
-delay:
- sub r0,r0,#1
- cmp r0,#0
- bne delay
-
- /* Putting system in slow mode */
- ldr r0,SCCTRL_V
- mov r1,#2
- str r1,[r0]
-
- /* Changing PLL(1/2) frequency */
- mov r0,r4
- mov r1,r5
-
- cmp r4,#0
- beq pll1_freq
-
- /* Change PLL2 (DDR frequency) */
- ldr r6,PLL2_FREQ_V
- ldr r7,PLL2_CNTL_V
- b pll2_freq
-
-pll1_freq:
- /* Change PLL1 (CPU frequency) */
- ldr r6,PLL1_FREQ_V
- ldr r7,PLL1_CNTL_V
-
-pll2_freq:
- mov r0,r6
- ldr r1,[r0]
- ldr r2,PLLFREQ_MASK_V
- bic r1,r1,r2
- mov r2,r5,lsr#1
- orr r1,r1,r2,lsl#24
- str r1,[r0]
-
- mov r0,r7
- ldr r1,P1C0A_V
- str r1,[r0]
- ldr r1,P1C0E_V
- str r1,[r0]
- ldr r1,P1C06_V
- str r1,[r0]
- ldr r1,P1C0E_V
- str r1,[r0]
-
-lock:
- ldr r1,[r0]
- and r1,r1,#1
- cmp r1,#0
- beq lock
-
- /* Putting system back to normal mode */
- ldr r0,SCCTRL_V
- mov r1,#4
- str r1,[r0]
-
- /* Putting DDR back to normal */
- ldr r0,DDR_07_V
- ldr r1,[R0]
- ldr r2,SREFRESH_MASK_V
- bic r1, r1, r2
- str r1,[r0]
- ldr r2,DDR_ACTIVE_V
- orr r1, r1, r2
- str r1,[r0]
-
- /* Delay to ensure self refresh mode */
- ldr r0,SREFRESH_DELAY_V
-1:
- sub r0,r0,#1
- cmp r0,#0
- bne 1b
-
- mov sp,r8
- /* Resuming back to code */
- ldmia sp!,{r0-r12}
- ldmia sp!,{pc}
-
-SCCTRL_V:
- .word 0xfca00000
-PLL1_FREQ_V:
- .word 0xfca8000C
-PLL1_CNTL_V:
- .word 0xfca80008
-PLL2_FREQ_V:
- .word 0xfca80018
-PLL2_CNTL_V:
- .word 0xfca80014
-PLLFREQ_MASK_V:
- .word 0xff000000
-P1C0A_V:
- .word 0x1C0A
-P1C0E_V:
- .word 0x1C0E
-P1C06_V:
- .word 0x1C06
-
-SREFRESH_DELAY_V:
- .word 0x9999
-SRAM_STACK_V:
- .word 0xD2800600
-DDR_07_V:
- .word 0xfc60001c
-DDR_ACTIVE_V:
- .word 0x01000000
-DDR_57_V:
- .word 0xfc6000e4
-CYCLES_MASK_V:
- .word 0xffff0000
-REFRESH_CYCLES_V:
- .word 0xf0f0
-SREFRESH_MASK_V:
- .word 0x00010000
-
-.global setfreq_sz
-setfreq_sz:
- .word setfreq_sz - setfreq