Revert merge of git://www.denx.de/git/u-boot-arm, commit 62479b18:

Reverting became necessary after it turned out that the patches in
the u-boot-arm repo were modified, and in some cases corrupted.

This reverts the following commits:

	066bebd6353e33af3adefc3404560871699e9961
	7a837b7310166ae8fc8b8d66d7ef01b60a80f9d6
	c88ae20580b2b01487b4cdcc8b2a113f551aee36
	a147e56f03871bba4f05058d5e04ce7deb010b04
	d6674e0e2a6a1f033945f78838566210d3f28c95
	8c8463cce44d849e37744749b32d38e1dfb12e50
	c98b47ad24b2d91f41c09a3d62d7f70ad84f4b7d
	8bf69d81782619187933a605f1a95ee1d069478d
	8c16cb0d3b971f46fbe77c072664c0f2dcd4471d
	a574a73852a527779234e73e17e7597fd8128882
	1377b5583a48021d983e1fd565f7d40c89e84d63
	1704dc20917b4f71e373e2c888497ee666d40380

Signed-off-by: Wolfgang Denk <wd@denx.de>

3 files changed, 111 insertions, 78 deletions

diff --git a/cpu/arm926ejs/davinci/lowlevel_init.S b/cpu/arm926ejs/davinci/lowlevel_init.S
index 79bc692..a87c112 100644
--- a/cpu/arm926ejs/davinci/lowlevel_init.S
+++ b/cpu/arm926ejs/davinci/lowlevel_init.S
@@ -3,11 +3,6 @@
  *
  * 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:
  */
 
@@ -161,17 +156,17 @@ WaitPPL2Loop:
 
 	/* Program the PLL Multiplier */
 	ldr	r6, PLL2_PLLM
-	mov	r2, $CFG_DAVINCI_PLL2_PLLM
+	mov	r2, $0x17	/* 162 MHz */
 	str	r2, [r6]
 
 	/* Program the PLL2 Divisor Value */
 	ldr	r6, PLL2_DIV2
-	mov	r3, $CFG_DAVINCI_PLL2_DIV2
+	mov	r3, $0x01
 	str	r3, [r6]
 
 	/* Program the PLL2 Divisor Value */
 	ldr	r6, PLL2_DIV1
-	mov	r4, $CFG_DAVINCI_PLL2_DIV1
+	mov	r4, $0x0b	/* 54 MHz */
 	str	r4, [r6]
 
 	/* PLL2 DIV2 MMR */
@@ -278,7 +273,7 @@ checkDDRStatClkStop:
 	bne	checkDDRStatClkStop
 
 	/*------------------------------------------------------*
-	 * Program DDR2 MMRs					*
+	 * Program DDR2 MMRs for 162MHz Setting			*
 	 *------------------------------------------------------*/
 
 	/* Program PHY Control Register */
@@ -293,12 +288,12 @@ checkDDRStatClkStop:
 
 	/* Program SDRAM TIM-0 Config Register */
 	ldr	r6, SDTIM0
-	ldr	r7, SDTIM0_VAL
+	ldr	r7, SDTIM0_VAL_162MHz
 	str	r7, [r6]
 
 	/* Program SDRAM TIM-1 Config Register */
 	ldr	r6, SDTIM1
-	ldr	r7, SDTIM1_VAL
+	ldr	r7, SDTIM1_VAL_162MHz
 	str	r7, [r6]
 
 	/* Program the SDRAM Bank Config Control Register */
@@ -440,7 +435,7 @@ WaitLoop:
 
 	/* Program the PLL Multiplier */
 	ldr	r6, PLL1_PLLM
-	mov	r3, $CFG_DAVINCI_PLL1_PLLM
+	mov	r3, $0x15	/* For 594MHz */
 	str	r3, [r6]
 
 	/* Wait for PLL to Reset Properly */
@@ -472,7 +467,7 @@ PLL1Lock:
 	nop
 
 	/*------------------------------------------------------*
-	 * AEMIF configuration for NAND/NOR Flash		*
+	 * AEMIF configuration for NOR Flash (double check)     *
 	 *------------------------------------------------------*/
 	ldr	r0, _PINMUX0
 	ldr	r1, _DEV_SETTING
@@ -484,12 +479,6 @@ 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]
@@ -508,12 +497,6 @@ 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               *
 	 *--------------------------------------*/
@@ -577,36 +560,24 @@ _PINMUX1:
 	.word	0x01c40004		/* Device Configuration Registers */
 
 _DEV_SETTING:
-	.word	CFG_DAVINCI_PINMUX_0
+	.word	0x00000c1f
 
 WAITCFG:
 	.word	0x01e00004
 WAITCFG_VAL:
-	.word	CFG_DAVINCI_WAITCFG
-ACFG2:
-	.word	0x01e00010
-ACFG2_VAL:
-	.word	CFG_DAVINCI_ACFG2
+	.word	0
 ACFG3:
 	.word	0x01e00014
 ACFG3_VAL:
-	.word	CFG_DAVINCI_ACFG3
+	.word	0x3ffffffd
 ACFG4:
 	.word	0x01e00018
 ACFG4_VAL:
-	.word	CFG_DAVINCI_ACFG4
+	.word	0x3ffffffd
 ACFG5:
 	.word	0x01e0001c
 ACFG5_VAL:
-	.word	CFG_DAVINCI_ACFG5
-NANDFCR:
-	.word	0x01e00060
-NANDFCR_VAL:
-#ifdef CFG_DAVINCI_NANDCE
-	.word	(1 << (CFG_DAVINCI_NANDCE - 2))
-#else
-	.word	0x00000000
-#endif
+	.word	0x3ffffffd
 
 MDCTL_DDR2:
 	.word	0x01c41a34
@@ -628,27 +599,33 @@ PSC_FLAG_CLEAR:
 PSC_GEM_FLAG_CLEAR:
 	.word	0xfffffeff
 
-/* DDR2 MMR & CONFIGURATION VALUES */
+/* DDR2 MMR & CONFIGURATION VALUES, 162 MHZ clock */
 DDRCTL:
 	.word	0x200000e4
 DDRCTL_VAL:
-	.word	CFG_DAVINCI_DDRCTL
+	.word	0x50006405
 SDREF:
 	.word	0x2000000c
 SDREF_VAL:
-	.word	CFG_DAVINCI_SDREF
+	.word	0x000005c3
 SDCFG:
 	.word	0x20000008
 SDCFG_VAL:
-	.word	CFG_DAVINCI_SDCFG
+#ifdef	DDR_4BANKS
+	.word	0x00178622
+#elif defined DDR_8BANKS
+	.word	0x00178632
+#else
+#error "Unknown DDR configuration!!!"
+#endif
 SDTIM0:
 	.word	0x20000010
-SDTIM0_VAL:
-	.word	CFG_DAVINCI_SDTIM0
+SDTIM0_VAL_162MHz:
+	.word	0x28923211
 SDTIM1:
 	.word	0x20000014
-SDTIM1_VAL:
-	.word	CFG_DAVINCI_SDTIM1
+SDTIM1_VAL_162MHz:
+	.word	0x0016c722
 VTPIOCR:
 	.word	0x200000f0	/* VTP IO Control register */
 DDRVTPR:
@@ -722,7 +699,7 @@ PLL2_DIV_MASK:
 MMARG_BRF0:
 	.word	0x01c42010	/* BRF margin mode 0 (R/W)*/
 MMARG_BRF0_VAL:
-	.word	CFG_DAVINCI_MMARG_BRF0
+	.word	0x00444400
 
 DDR2_START_ADDR:
 	.word	0x80000000
diff --git a/cpu/arm926ejs/davinci/nand.c b/cpu/arm926ejs/davinci/nand.c
index 3257f83..127be9f 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 << (CFG_DAVINCI_NANDCE + 6));
+	emif_addr->NANDFCR |= (1 << 8);
 }
 
 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 = (CFG_DAVINCI_NANDCE - 1);
+	region = 1;
 	while (n--) {
 		tmp = nand_davinci_readecc(mtd, region);
 		*ecc_code++ = tmp;
@@ -311,9 +311,40 @@ static int nand_davinci_waitfunc(struct mtd_info *mtd, struct nand_chip *this, i
 
 static void nand_flash_init(void)
 {
-	/* All EMIF initialization is done in lowlevel_init.S
-	 * and config values are in the board config files
-	 */
+	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;
 }
 
 int board_nand_init(struct nand_chip *nand)
diff --git a/cpu/arm926ejs/davinci/timer.c b/cpu/arm926ejs/davinci/timer.c
index 4797797..8bb8b45 100644
--- a/cpu/arm926ejs/davinci/timer.c
+++ b/cpu/arm926ejs/davinci/timer.c
@@ -42,9 +42,9 @@
 
 typedef volatile struct {
 	u_int32_t	pid12;
-	u_int32_t	emumgt;
-	u_int32_t	na1;
-	u_int32_t	na2;
+	u_int32_t	emumgt_clksped;
+	u_int32_t	gpint_en;
+	u_int32_t	gpdir_dat;
 	u_int32_t	tim12;
 	u_int32_t	tim34;
 	u_int32_t	prd12;
@@ -52,12 +52,21 @@ typedef volatile struct {
 	u_int32_t	tcr;
 	u_int32_t	tgcr;
 	u_int32_t	wdtcr;
+	u_int32_t	tlgc;
+	u_int32_t	tlmr;
 } davinci_timer;
 
 davinci_timer		*timer = (davinci_timer *)CFG_TIMERBASE;
 
 #define TIMER_LOAD_VAL	(CFG_HZ_CLOCK / CFG_HZ)
-#define TIM_CLK_DIV	16
+#define READ_TIMER	timer->tim34
+
+/*
+ * Timer runs with CFG_HZ_CLOCK, currently 27MHz. To avoid wrap
+ * around of timestamp already after min ~159s, divide it, e.g. by 16.
+ * timestamp will then wrap around all min ~42min
+ */
+#define DIV(x)		((x) >> 4)
 
 static ulong timestamp;
 static ulong lastinc;
@@ -67,50 +76,63 @@ int timer_init(void)
 	/* We are using timer34 in unchained 32-bit mode, full speed */
 	timer->tcr = 0x0;
 	timer->tgcr = 0x0;
-	timer->tgcr = 0x06 | ((TIM_CLK_DIV - 1) << 8);
+	timer->tgcr = 0x06;
 	timer->tim34 = 0x0;
 	timer->prd34 = TIMER_LOAD_VAL;
 	lastinc = 0;
+	timer->tcr = 0x80 << 16;
 	timestamp = 0;
-	timer->tcr = 2 << 22;
 
 	return(0);
 }
 
 void reset_timer(void)
 {
-	timer->tcr = 0x0;
-	timer->tim34 = 0;
-	lastinc = 0;
+	reset_timer_masked();
+}
+
+ulong get_timer(ulong base)
+{
+	return(get_timer_masked() - base);
+}
+
+void set_timer(ulong t)
+{
+	timestamp = t;
+}
+
+void udelay(unsigned long usec)
+{
+	udelay_masked(usec);
+}
+
+void reset_timer_masked(void)
+{
+	lastinc = DIV(READ_TIMER);
 	timestamp = 0;
-	timer->tcr = 2 << 22;
 }
 
-static ulong get_timer_raw(void)
+ulong get_timer_raw(void)
 {
-	ulong now = timer->tim34;
+	ulong now = DIV(READ_TIMER);
 
 	if (now >= lastinc) {
 		/* normal mode */
 		timestamp += now - lastinc;
 	} else {
 		/* overflow ... */
-		timestamp += now + TIMER_LOAD_VAL - lastinc;
+		timestamp += now + DIV(TIMER_LOAD_VAL) - lastinc;
 	}
 	lastinc = now;
 	return timestamp;
 }
 
-ulong get_timer(ulong base)
-{
-	return((get_timer_raw() / (TIMER_LOAD_VAL / TIM_CLK_DIV)) - base); }
-
-void set_timer(ulong t)
+ulong get_timer_masked(void)
 {
-	timestamp = t;
+	return(get_timer_raw() / DIV(TIMER_LOAD_VAL));
 }
 
-void udelay(unsigned long usec)
+void udelay_masked(unsigned long usec)
 {
 	ulong tmo;
 	ulong endtime;
@@ -118,7 +140,7 @@ void udelay(unsigned long usec)
 
 	tmo = CFG_HZ_CLOCK / 1000;
 	tmo *= usec;
-	tmo /= (1000 * TIM_CLK_DIV);
+	tmo /= 1000;
 
 	endtime = get_timer_raw() + tmo;
 
@@ -143,5 +165,8 @@ unsigned long long get_ticks(void)
  */
 ulong get_tbclk(void)
 {
-	return CFG_HZ;
+	ulong tbclk;
+
+	tbclk = CFG_HZ;
+	return(tbclk);
 }