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-rw-r--r--arch/nds32/cpu/n1213/ag101/asm-offsets.c1
-rw-r--r--arch/nds32/cpu/n1213/ag101/lowlevel_init.S88
2 files changed, 85 insertions, 4 deletions
diff --git a/arch/nds32/cpu/n1213/ag101/asm-offsets.c b/arch/nds32/cpu/n1213/ag101/asm-offsets.c
index 92ada8a..cfe52d1 100644
--- a/arch/nds32/cpu/n1213/ag101/asm-offsets.c
+++ b/arch/nds32/cpu/n1213/ag101/asm-offsets.c
@@ -21,6 +21,7 @@ int main(void)
#endif
BLANK();
#ifdef CONFIG_FTAHBC020S
+ OFFSET(FTAHBC020S_SLAVE_BSR_4, ftahbc02s, s_bsr[4]);
OFFSET(FTAHBC020S_SLAVE_BSR_6, ftahbc02s, s_bsr[6]);
OFFSET(FTAHBC020S_CR, ftahbc02s, cr);
#endif
diff --git a/arch/nds32/cpu/n1213/ag101/lowlevel_init.S b/arch/nds32/cpu/n1213/ag101/lowlevel_init.S
index 810326d..d6484b9 100644
--- a/arch/nds32/cpu/n1213/ag101/lowlevel_init.S
+++ b/arch/nds32/cpu/n1213/ag101/lowlevel_init.S
@@ -32,6 +32,15 @@
#define SDMC_B0_BSR_D CONFIG_SYS_FTSDMC021_BANK0_BSR
#define SDMC_B1_BSR_D CONFIG_SYS_FTSDMC021_BANK1_BSR
+
+/*
+ * for Orca and Emerald
+ */
+#define BOARD_ID_REG 0x104
+#define BOARD_ID_FAMILY_MASK 0xfff000
+#define BOARD_ID_FAMILY_V5 0x556000
+#define BOARD_ID_FAMILY_K7 0x74b000
+
/*
* parameters for the static memory controller
*/
@@ -47,6 +56,10 @@
#define AHBC_CR_A (CONFIG_FTAHBC020S_BASE + FTAHBC020S_CR)
#define AHBC_BSR6_A (CONFIG_FTAHBC020S_BASE + FTAHBC020S_SLAVE_BSR_6)
+/*
+ * for Orca and Emerald
+ */
+#define AHBC_BSR4_A (CONFIG_FTAHBC020S_BASE + FTAHBC020S_SLAVE_BSR_4)
#define AHBC_BSR6_D CONFIG_SYS_FTAHBC020S_SLAVE_BSR_6
/*
@@ -100,14 +113,49 @@ mem_init:
* we need to set onboard SDRAM before remap and relocation.
*/
led 0x01
- write32 SMC_BANK0_CR_A, SMC_BANK0_CR_D ! 0x10000052
- write32 SMC_BANK0_TPR_A, SMC_BANK0_TPR_D ! 0x00151151
+
+ /*
+ * for Orca and Emerald
+ * disable write protection and reset bank size
+ */
+ li $r0, SMC_BANK0_CR_A
+ lwi $r1, [$r0+#0x00]
+ ori $r1, $r1, 0x8f0
+ xori $r1, $r1, 0x8f0
+ /*
+ * check board
+ */
+ li $r3, CONFIG_FTPMU010_BASE + BOARD_ID_REG
+ lwi $r3, [$r3]
+ li $r4, BOARD_ID_FAMILY_MASK
+ and $r3, $r3, $r4
+ li $r4, BOARD_ID_FAMILY_K7
+ xor $r4, $r3, $r4
+ beqz $r4, use_flash_16bit_boot
+ /*
+ * 32-bit mode
+ */
+use_flash_32bit_boot:
+ ori $r1, $r1, 0x50
+ li $r2, 0x00151151
+ j sdram_b0_cr
+ /*
+ * 16-bit mode
+ */
+use_flash_16bit_boot:
+ ori $r1, $r1, 0x60
+ li $r2, 0x00153153
+ /*
+ * SRAM bank0 config
+ */
+sdram_b0_cr:
+ swi $r1, [$r0+#0x00]
+ swi $r2, [$r0+#0x04]
/*
* config AHB Controller
*/
led 0x02
- write32 AHBC_BSR6_A, AHBC_BSR6_D
/*
* config PMU controller
@@ -194,7 +242,16 @@ relo_base:
* a FLASH connected to bank0.
*/
led 0x11
- li $r4, PHYS_SDRAM_0_AT_INIT /* 0x10000000 */
+ /*
+ * for Orca and Emerald
+ * read sdram base address automatically
+ */
+ li $r5, AHBC_BSR6_A
+ lwi $r8, [$r5]
+ li $r4, 0xfff00000
+ and $r4, $r4, $r8
+
+
li $r5, 0x0
la $r1, relo_base /* get $pc or $lp */
sub $r2, $r0, $r1
@@ -218,6 +275,29 @@ relo_base:
write32 SDMC_B1_BSR_A, 0x00001040
setbf15 AHBC_CR_A, FTAHBC020S_CR_REMAP ! 0x1
+ /*
+ * for Orca and Emerald
+ * extend sdram size from 256MB to 2GB
+ */
+ li $r5, AHBC_BSR6_A
+ lwi $r6, [$r5]
+ li $r4, 0xfff0ffff
+ and $r6 ,$r4 , $r6
+ li $r4, 0x000b0000
+ or $r6, $r4, $r6
+ swi $r6, [$r5]
+
+ /*
+ * for Orca and Emerald
+ * extend rom base from 256MB to 2GB
+ */
+ li $r4, AHBC_BSR4_A
+ lwi $r5, [$r4]
+ li $r6, 0xffffff
+ and $r5, $r5, $r6
+ li $r6, 0x80000000
+ or $r5, $r5, $r6
+ swi $r5, [$r4]
#endif /* #ifdef CONFIG_MEM_REMAP */
move $lp, $r11
2: