nds32: Support AE3XX platform.
Support Andestech AE3xx platform: serial, timer device tree flow.
Signed-off-by: rick <rick@andestech.com>
diff --git a/arch/nds32/cpu/n1213/start.S b/arch/nds32/cpu/n1213/start.S
index 7992fd9..f9f9999 100644
--- a/arch/nds32/cpu/n1213/start.S
+++ b/arch/nds32/cpu/n1213/start.S
@@ -114,11 +114,39 @@
set_ivb:
li $r0, 0x0
-
/* turn on BTB */
mtsr $r0, $misc_ctl
/* set IVIC, vector size: 4 bytes, base: 0x0 */
mtsr $r0, $ivb
+/*
+ * MMU_CTL NTC0 Cacheable/Write-Back
+ */
+ li $r0, ~0x3
+ mfsr $r1, $mr8
+ and $r1, $r1, $r0
+ mtsr $r1, $mr8
+#if (!defined(CONFIG_SYS_ICACHE_OFF) || !defined(CONFIG_SYS_DCACHE_OFF))
+ li $r0, 0x4
+ mfsr $r1, $mr0
+ or $r1, $r1, $r0
+ mtsr $r1, $mr0
+#endif
+
+#if !defined(CONFIG_SYS_ICACHE_OFF)
+ li $r0, 0x1
+ mfsr $r1, $mr8
+ or $r1, $r1, $r0
+ mtsr $r1, $mr8
+#endif
+
+#if !defined(CONFIG_SYS_DCACHE_OFF)
+ li $r0, 0x2
+ mfsr $r1, $mr8
+ or $r1, $r1, $r0
+ mtsr $r1, $mr8
+#endif
+
+ jal mem_init
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
jal lowlevel_init
@@ -133,7 +161,6 @@
ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_-4)
add5.pc $gp
#endif
-
/*
* do critical initializations first (shall be in short time)
* do self_relocation ASAP.
@@ -169,7 +196,6 @@
bal debug_uart_init
#endif
li $r0, 0x00000000
-
#ifdef __PIC__
#ifdef __NDS32_N1213_43U1H__
/* __NDS32_N1213_43U1H__ implies NDS32 V0 ISA */
@@ -205,12 +231,10 @@
la $r1, _end@GOTOFF
move $r2, $r6 /* r2 <- scratch for copy_loop */
-
copy_loop:
- lwi.p $r7, [$r0], #4
- swi.p $r7, [$r2], #4
+ lmw.bim $r11, [$r0], $r18
+ smw.bim $r11, [$r2], $r18
blt $r0, $r1, copy_loop
-
/*
* fix relocations related issues
*/
@@ -250,6 +274,8 @@
* initialization, now running from RAM.
*/
call_board_init_r:
+ bal invalidate_icache_all
+ bal flush_dcache_all
la $r0, board_init_r@GOTOFF
move $lp, $r0 /* offset of board_init_r() */
add $lp, $lp, $r9 /* real address of board_init_r() */