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-rw-r--r--cpu/arm926ejs/davinci/lowlevel_init.S79
-rw-r--r--cpu/arm926ejs/davinci/nand.c41
-rw-r--r--cpu/arm926ejs/davinci/timer.c69
3 files changed, 78 insertions, 111 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
diff --git a/cpu/arm926ejs/davinci/nand.c b/cpu/arm926ejs/davinci/nand.c
index 127be9f..3257f83 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)
diff --git a/cpu/arm926ejs/davinci/timer.c b/cpu/arm926ejs/davinci/timer.c
index 8bb8b45..4797797 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_clksped;
- u_int32_t gpint_en;
- u_int32_t gpdir_dat;
+ u_int32_t emumgt;
+ u_int32_t na1;
+ u_int32_t na2;
u_int32_t tim12;
u_int32_t tim34;
u_int32_t prd12;
@@ -52,21 +52,12 @@ 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 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)
+#define TIM_CLK_DIV 16
static ulong timestamp;
static ulong lastinc;
@@ -76,63 +67,50 @@ int timer_init(void)
/* We are using timer34 in unchained 32-bit mode, full speed */
timer->tcr = 0x0;
timer->tgcr = 0x0;
- timer->tgcr = 0x06;
+ timer->tgcr = 0x06 | ((TIM_CLK_DIV - 1) << 8);
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)
{
- 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);
+ timer->tcr = 0x0;
+ timer->tim34 = 0;
+ lastinc = 0;
timestamp = 0;
+ timer->tcr = 2 << 22;
}
-ulong get_timer_raw(void)
+static ulong get_timer_raw(void)
{
- ulong now = DIV(READ_TIMER);
+ ulong now = timer->tim34;
if (now >= lastinc) {
/* normal mode */
timestamp += now - lastinc;
} else {
/* overflow ... */
- timestamp += now + DIV(TIMER_LOAD_VAL) - lastinc;
+ timestamp += now + TIMER_LOAD_VAL - lastinc;
}
lastinc = now;
return timestamp;
}
-ulong get_timer_masked(void)
+ulong get_timer(ulong base)
+{
+ return((get_timer_raw() / (TIMER_LOAD_VAL / TIM_CLK_DIV)) - base); }
+
+void set_timer(ulong t)
{
- return(get_timer_raw() / DIV(TIMER_LOAD_VAL));
+ timestamp = t;
}
-void udelay_masked(unsigned long usec)
+void udelay(unsigned long usec)
{
ulong tmo;
ulong endtime;
@@ -140,7 +118,7 @@ void udelay_masked(unsigned long usec)
tmo = CFG_HZ_CLOCK / 1000;
tmo *= usec;
- tmo /= 1000;
+ tmo /= (1000 * TIM_CLK_DIV);
endtime = get_timer_raw() + tmo;
@@ -165,8 +143,5 @@ unsigned long long get_ticks(void)
*/
ulong get_tbclk(void)
{
- ulong tbclk;
-
- tbclk = CFG_HZ;
- return(tbclk);
+ return CFG_HZ;
}
generated by cgit v1.1 at 2024-11-10 02:21:33 +0000