From 1377b5583a48021d983e1fd565f7d40c89e84d63 Mon Sep 17 00:00:00 2001 From: Pieter Voorthuijsen <[pieter.voorthuijsen@Prodrive.nl]> Date: Sun, 30 Mar 2008 11:11:34 +0100 Subject: Removes all board specific code from the arch. part for DM644x (DaVinci) boards Signed-off-by: Pieter Voorthuijsen --- cpu/arm926ejs/davinci/lowlevel_init.S | 79 ++++++++++++++++++++++------------- cpu/arm926ejs/davinci/nand.c | 41 +++--------------- 2 files changed, 56 insertions(+), 64 deletions(-) (limited to 'cpu') diff --git a/cpu/arm926ejs/davinci/lowlevel_init.S b/cpu/arm926ejs/davinci/lowlevel_init.S index a87c112eca..79bc692c14 100644 --- a/cpu/arm926ejs/davinci/lowlevel_init.S +++ b/cpu/arm926ejs/davinci/lowlevel_init.S @@ -3,6 +3,11 @@ * * Copyright (C) 2007 Sergey Kubushyn * + * Copyright (C) 2008 Prodrive BV + * 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 diff --git a/cpu/arm926ejs/davinci/nand.c b/cpu/arm926ejs/davinci/nand.c index 127be9fcd4..3257f83a2f 100644 --- a/cpu/arm926ejs/davinci/nand.c +++ b/cpu/arm926ejs/davinci/nand.c @@ -117,7 +117,7 @@ static void nand_davinci_enable_hwecc(struct mtd_info *mtd, int mode) dummy = emif_addr->NANDF3ECC; dummy = emif_addr->NANDF4ECC; - emif_addr->NANDFCR |= (1 << 8); + emif_addr->NANDFCR |= (1 << (CFG_DAVINCI_NANDCE + 6)); } static u_int32_t nand_davinci_readecc(struct mtd_info *mtd, u_int32_t region) @@ -147,7 +147,7 @@ static int nand_davinci_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u n = (this->eccmode == NAND_ECC_HW12_2048) ? 4 : 1; - region = 1; + region = (CFG_DAVINCI_NANDCE - 1); while (n--) { tmp = nand_davinci_readecc(mtd, region); *ecc_code++ = tmp; @@ -311,40 +311,9 @@ static int nand_davinci_waitfunc(struct mtd_info *mtd, struct nand_chip *this, i static void nand_flash_init(void) { - u_int32_t acfg1 = 0x3ffffffc; - u_int32_t acfg2 = 0x3ffffffc; - u_int32_t acfg3 = 0x3ffffffc; - u_int32_t acfg4 = 0x3ffffffc; - emifregs emif_regs; - - /*------------------------------------------------------------------* - * NAND FLASH CHIP TIMEOUT @ 459 MHz * - * * - * AEMIF.CLK freq = PLL1/6 = 459/6 = 76.5 MHz * - * AEMIF.CLK period = 1/76.5 MHz = 13.1 ns * - * * - *------------------------------------------------------------------*/ - acfg1 = 0 - | (0 << 31 ) /* selectStrobe */ - | (0 << 30 ) /* extWait */ - | (1 << 26 ) /* writeSetup 10 ns */ - | (3 << 20 ) /* writeStrobe 40 ns */ - | (1 << 17 ) /* writeHold 10 ns */ - | (1 << 13 ) /* readSetup 10 ns */ - | (5 << 7 ) /* readStrobe 60 ns */ - | (1 << 4 ) /* readHold 10 ns */ - | (3 << 2 ) /* turnAround ?? ns */ - | (0 << 0 ) /* asyncSize 8-bit bus */ - ; - - emif_regs = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE; - - emif_regs->AWCCR |= 0x10000000; - emif_regs->AB1CR = acfg1; /* 0x08244128 */; - emif_regs->AB2CR = acfg2; - emif_regs->AB3CR = acfg3; - emif_regs->AB4CR = acfg4; - emif_regs->NANDFCR = 0x00000101; + /* All EMIF initialization is done in lowlevel_init.S + * and config values are in the board config files + */ } int board_nand_init(struct nand_chip *nand) -- cgit v1.2.1