diff options
Diffstat (limited to 'arch/nds32/cpu/n1213/ag101/lowlevel_init.S')
| -rw-r--r-- | arch/nds32/cpu/n1213/ag101/lowlevel_init.S | 88 |
1 files changed, 84 insertions, 4 deletions
diff --git a/arch/nds32/cpu/n1213/ag101/lowlevel_init.S b/arch/nds32/cpu/n1213/ag101/lowlevel_init.S index 810326d200..d6484b9cc5 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: |