diff options
Diffstat (limited to 'cpu/arm926ejs/davinci/lowlevel_init.S')
| -rw-r--r-- | cpu/arm926ejs/davinci/lowlevel_init.S | 79 |
1 files changed, 51 insertions, 28 deletions
diff --git a/cpu/arm926ejs/davinci/lowlevel_init.S b/cpu/arm926ejs/davinci/lowlevel_init.S index a87c112..79bc692 100644 --- a/cpu/arm926ejs/davinci/lowlevel_init.S +++ b/cpu/arm926ejs/davinci/lowlevel_init.S @@ -3,6 +3,11 @@ * * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> * + * Copyright (C) 2008 Prodrive BV <pv@prodrive.nl> + * Changed: + * Made board specific defines such as DDR timing and PLL + * dividers. These should be set in the board config file + * * Partially based on TI sources, original copyrights follow: */ @@ -156,17 +161,17 @@ WaitPPL2Loop: /* Program the PLL Multiplier */ ldr r6, PLL2_PLLM - mov r2, $0x17 /* 162 MHz */ + mov r2, $CFG_DAVINCI_PLL2_PLLM str r2, [r6] /* Program the PLL2 Divisor Value */ ldr r6, PLL2_DIV2 - mov r3, $0x01 + mov r3, $CFG_DAVINCI_PLL2_DIV2 str r3, [r6] /* Program the PLL2 Divisor Value */ ldr r6, PLL2_DIV1 - mov r4, $0x0b /* 54 MHz */ + mov r4, $CFG_DAVINCI_PLL2_DIV1 str r4, [r6] /* PLL2 DIV2 MMR */ @@ -273,7 +278,7 @@ checkDDRStatClkStop: bne checkDDRStatClkStop /*------------------------------------------------------* - * Program DDR2 MMRs for 162MHz Setting * + * Program DDR2 MMRs * *------------------------------------------------------*/ /* Program PHY Control Register */ @@ -288,12 +293,12 @@ checkDDRStatClkStop: /* Program SDRAM TIM-0 Config Register */ ldr r6, SDTIM0 - ldr r7, SDTIM0_VAL_162MHz + ldr r7, SDTIM0_VAL str r7, [r6] /* Program SDRAM TIM-1 Config Register */ ldr r6, SDTIM1 - ldr r7, SDTIM1_VAL_162MHz + ldr r7, SDTIM1_VAL str r7, [r6] /* Program the SDRAM Bank Config Control Register */ @@ -435,7 +440,7 @@ WaitLoop: /* Program the PLL Multiplier */ ldr r6, PLL1_PLLM - mov r3, $0x15 /* For 594MHz */ + mov r3, $CFG_DAVINCI_PLL1_PLLM str r3, [r6] /* Wait for PLL to Reset Properly */ @@ -467,7 +472,7 @@ PLL1Lock: nop /*------------------------------------------------------* - * AEMIF configuration for NOR Flash (double check) * + * AEMIF configuration for NAND/NOR Flash * *------------------------------------------------------*/ ldr r0, _PINMUX0 ldr r1, _DEV_SETTING @@ -479,6 +484,12 @@ PLL1Lock: orr r2, r2, r1 str r2, [r0] + ldr r0, ACFG2 + ldr r1, ACFG2_VAL + ldr r2, [r0] + and r1, r2, r1 + str r1, [r0] + ldr r0, ACFG3 ldr r1, ACFG3_VAL ldr r2, [r0] @@ -497,6 +508,12 @@ PLL1Lock: and r1, r2, r1 str r1, [r0] + ldr r0, NANDFCR + ldr r1, NANDFCR_VAL + ldr r2, [r0] + and r1, r2, r1 + str r1, [r0] + /*--------------------------------------* * VTP manual Calibration * *--------------------------------------*/ @@ -560,24 +577,36 @@ _PINMUX1: .word 0x01c40004 /* Device Configuration Registers */ _DEV_SETTING: - .word 0x00000c1f + .word CFG_DAVINCI_PINMUX_0 WAITCFG: .word 0x01e00004 WAITCFG_VAL: - .word 0 + .word CFG_DAVINCI_WAITCFG +ACFG2: + .word 0x01e00010 +ACFG2_VAL: + .word CFG_DAVINCI_ACFG2 ACFG3: .word 0x01e00014 ACFG3_VAL: - .word 0x3ffffffd + .word CFG_DAVINCI_ACFG3 ACFG4: .word 0x01e00018 ACFG4_VAL: - .word 0x3ffffffd + .word CFG_DAVINCI_ACFG4 ACFG5: .word 0x01e0001c ACFG5_VAL: - .word 0x3ffffffd + .word CFG_DAVINCI_ACFG5 +NANDFCR: + .word 0x01e00060 +NANDFCR_VAL: +#ifdef CFG_DAVINCI_NANDCE + .word (1 << (CFG_DAVINCI_NANDCE - 2)) +#else + .word 0x00000000 +#endif MDCTL_DDR2: .word 0x01c41a34 @@ -599,33 +628,27 @@ PSC_FLAG_CLEAR: PSC_GEM_FLAG_CLEAR: .word 0xfffffeff -/* DDR2 MMR & CONFIGURATION VALUES, 162 MHZ clock */ +/* DDR2 MMR & CONFIGURATION VALUES */ DDRCTL: .word 0x200000e4 DDRCTL_VAL: - .word 0x50006405 + .word CFG_DAVINCI_DDRCTL SDREF: .word 0x2000000c SDREF_VAL: - .word 0x000005c3 + .word CFG_DAVINCI_SDREF SDCFG: .word 0x20000008 SDCFG_VAL: -#ifdef DDR_4BANKS - .word 0x00178622 -#elif defined DDR_8BANKS - .word 0x00178632 -#else -#error "Unknown DDR configuration!!!" -#endif + .word CFG_DAVINCI_SDCFG SDTIM0: .word 0x20000010 -SDTIM0_VAL_162MHz: - .word 0x28923211 +SDTIM0_VAL: + .word CFG_DAVINCI_SDTIM0 SDTIM1: .word 0x20000014 -SDTIM1_VAL_162MHz: - .word 0x0016c722 +SDTIM1_VAL: + .word CFG_DAVINCI_SDTIM1 VTPIOCR: .word 0x200000f0 /* VTP IO Control register */ DDRVTPR: @@ -699,7 +722,7 @@ PLL2_DIV_MASK: MMARG_BRF0: .word 0x01c42010 /* BRF margin mode 0 (R/W)*/ MMARG_BRF0_VAL: - .word 0x00444400 + .word CFG_DAVINCI_MMARG_BRF0 DDR2_START_ADDR: .word 0x80000000 |