Hello,
In the current implementation of the DM644x (DaVinci) achitecture there
is a lot of code in the /cpu/arm926ejs/davinci folder that is meant to
be board specific. I'm talking about EMIF timing/width configuration for
NAND and NOR but also DRAM timing settings which are of course different
for boards. This patch makes the board config files configure the
architecture files (lowlevel_init.S and nand.c) with defines.
Also there is a small addition to add support for the DVEVM, the only
difference is an Intel NOR instead of an AMD, so blocksizes are
different.
This is tested with the Davinci EVM (Old and new one), the other boards
(Sonata and Schmoogie) are building with these patches.
Best regards,
Pieter Voorthuijsen
Signed-off-by: Pieter Voorthuijsen <[EMAIL PROTECTED]>
---
cpu/arm926ejs/davinci/lowlevel_init.S | 79
++++++++++++++++++++-----------
cpu/arm926ejs/davinci/nand.c | 41 ++--------------
include/asm-arm/arch-davinci/hardware.h | 2 +
include/configs/davinci_dvevm.h | 33 ++++++++++++-
include/configs/davinci_schmoogie.h | 19 +++++++-
include/configs/davinci_sonata.h | 18 +++++++
6 files changed, 124 insertions(+), 68 deletions(-)
diff --git a/cpu/arm926ejs/davinci/lowlevel_init.S
b/cpu/arm926ejs/davinci/lowlevel_init.S
index a87c112..0e94981 100644
--- a/cpu/arm926ejs/davinci/lowlevel_init.S
+++ b/cpu/arm926ejs/davinci/lowlevel_init.S
@@ -3,6 +3,11 @@
*
* Copyright (C) 2007 Sergey Kubushyn <[EMAIL PROTECTED]>
*
+ * Copyright (C) 2008 Prodrive BV <[EMAIL PROTECTED]>
+ * 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/include/asm-arm/arch-davinci/hardware.h
b/include/asm-arm/arch-davinci/hardware.h
index ebcdcfe..71c38b0 100644
--- a/include/asm-arm/arch-davinci/hardware.h
+++ b/include/asm-arm/arch-davinci/hardware.h
@@ -150,6 +150,8 @@ typedef volatile unsigned int * dv_reg_p;
#define VDD3P3V_PWDN (0x01c40048)
#define UART0_PWREMU_MGMT (0x01c20030)
+#define UART1_PWREMU_MGMT (0x01c20430)
+#define UART2_PWREMU_MGMT (0x01c20830)
#define PSC_SILVER_BULLET (0x01c41a20)
diff --git a/include/configs/davinci_dvevm.h
b/include/configs/davinci_dvevm.h
index 8ecd059..11db760 100644
--- a/include/configs/davinci_dvevm.h
+++ b/include/configs/davinci_dvevm.h
@@ -52,6 +52,8 @@
#define DV_EVM
#define CFG_NAND_SMALLPAGE
#define CFG_USE_NOR
+#define CFG_USE_INTEL_NOR /* Define this when your DVEVM has Intel
+ * flash instead of AMD flash */
/*===================*/
/* SoC Configuration */
/*===================*/
@@ -60,6 +62,24 @@
#define CFG_TIMERBASE 0x01c21400 /* use timer 0 */
#define CFG_HZ_CLOCK 27000000 /* Timer Input clock
freq */
#define CFG_HZ 1000
+#define CFG_DAVINCI_PINMUX_0 0x00000c1f
+#define CFG_DAVINCI_WAITCFG 0x00000000
+#define CFG_DAVINCI_ACFG2 0x3ffffffd /* CE configs */
+#define CFG_DAVINCI_ACFG3 0x3ffffffd
+#define CFG_DAVINCI_ACFG4 0x3ffffffd
+#define CFG_DAVINCI_ACFG5 0x3ffffffd
+#undef CFG_DAVINCI_NANDCE /* When using NAND,
define 2,3 or 4 */
+#define CFG_DAVINCI_DDRCTL 0x50006405 /* DDR timing config */
+#define CFG_DAVINCI_SDREF 0x000005c3
+#define CFG_DAVINCI_SDCFG 0x00178632 /* 8 banks */
+/*#define CFG_DAVINCI_SDCFG 0x00178622*/ /* 4 banks */
+#define CFG_DAVINCI_SDTIM0 0x28923211
+#define CFG_DAVINCI_SDTIM1 0x0016c722
+#define CFG_DAVINCI_MMARG_BRF0 0x00444400
+#define CFG_DAVINCI_PLL1_PLLM 0x15 /* DM6446 = 0x15, DM6441
= 0x12, DM6441_LV = 0x0e */
+#define CFG_DAVINCI_PLL2_PLLM 0x17 /* 162 MHz */
+#define CFG_DAVINCI_PLL2_DIV1 0x0b /* 54 MHz */
+#define CFG_DAVINCI_PLL2_DIV2 0x01
/*====================================================*/
/* EEPROM definitions for Atmel 24C256BN SEEPROM chip */
/* on Sonata/DV_EVM board. No EEPROM on schmoogie. */
@@ -143,20 +163,27 @@
#define CFG_FLASH_CFI_DRIVER
#define CFG_FLASH_CFI
#define CFG_MAX_FLASH_BANKS 1 /* max number of flash
banks */
-#define CFG_FLASH_SECT_SZ 0x10000 /* 64KB sect size AMD
Flash */
-#define CFG_ENV_OFFSET (CFG_FLASH_SECT_SZ*3)
+#define CFG_ENV_ADDR (PHYS_FLASH_1 + 0x40000)
+#define CFG_ENV_OFFSET (CFG_ENV_ADDR)
+#define CFG_FLASH_USE_BUFFER_WRITE 1 /* use buffered writes
(20x faster) */
#define PHYS_FLASH_1 0x02000000 /* CS2 Base address
*/
#define CFG_FLASH_BASE PHYS_FLASH_1 /* Flash Base for U-Boot
*/
#define PHYS_FLASH_SIZE 0x2000000 /* Flash size
32MB */
#define CFG_MAX_FLASH_SECT (PHYS_FLASH_SIZE/CFG_FLASH_SECT_SZ)
#define CFG_ENV_SECT_SIZE CFG_FLASH_SECT_SZ /* Env sector
Size */
+#ifdef CFG_USE_INTEL_NOR
+#define CFG_FLASH_SECT_SZ 0x20000 /* 128KB sect size
INTEL Flash */
+#define CFG_FLASH_PROTECTION 1
+#else
+#define CFG_FLASH_SECT_SZ 0x10000 /* 64KB sect size AMD
Flash */
+#endif
#endif
/*==============================*/
/* U-Boot general configuration */
/*==============================*/
#undef CONFIG_USE_IRQ /* No IRQ/FIQ in U-Boot
*/
#define CONFIG_MISC_INIT_R
-#undef CONFIG_BOOTDELAY
+#undef CONFIG_BOOTDELAY
#define CONFIG_BOOTFILE "uImage" /* Boot file
name */
#define CFG_PROMPT "U-Boot > " /* Monitor Command
Prompt */
#define CFG_CBSIZE 1024 /* Console I/O Buffer
Size */
diff --git a/include/configs/davinci_schmoogie.h
b/include/configs/davinci_schmoogie.h
index 96c9a30..970fd19 100644
--- a/include/configs/davinci_schmoogie.h
+++ b/include/configs/davinci_schmoogie.h
@@ -35,6 +35,24 @@
#define CFG_TIMERBASE 0x01c21400 /* use timer 0 */
#define CFG_HZ_CLOCK 27000000 /* Timer Input clock
freq */
#define CFG_HZ 1000
+#define CFG_DAVINCI_PINMUX_0 0x00000c1f
+#define CFG_DAVINCI_WAITCFG 0x00000000
+#define CFG_DAVINCI_ACFG2 0x3ffffffd /* CE configs */
+#define CFG_DAVINCI_ACFG3 0x3ffffffd
+#define CFG_DAVINCI_ACFG4 0x3ffffffd
+#define CFG_DAVINCI_ACFG5 0x3ffffffd
+#undef CFG_DAVINCI_NANDCE /* When using NAND,
define 2,3 or 4 */
+#define CFG_DAVINCI_DDRCTL 0x50006405 /* DDR timing config */
+#define CFG_DAVINCI_SDREF 0x000005c3
+/*#define CFG_DAVINCI_SDCFG 0x00178632*/ /* 8 banks */
+#define CFG_DAVINCI_SDCFG 0x00178622 /* 4 banks */
+#define CFG_DAVINCI_SDTIM0 0x28923211
+#define CFG_DAVINCI_SDTIM1 0x0016c722
+#define CFG_DAVINCI_MMARG_BRF0 0x00444400
+#define CFG_DAVINCI_PLL1_PLLM 0x15 /* DM6446 = 0x15, DM6441
= 0x12, DM6441_LV = 0x0e */
+#define CFG_DAVINCI_PLL2_PLLM 0x17 /* 162 MHz */
+#define CFG_DAVINCI_PLL2_DIV1 0x0b /* 54 MHz */
+#define CFG_DAVINCI_PLL2_DIV2 0x01
/*=============*/
/* Memory Info */
/*=============*/
@@ -46,7 +64,6 @@
#define CONFIG_STACKSIZE (256*1024) /* regular stack */
#define PHYS_SDRAM_1 0x80000000 /* DDR Start */
#define PHYS_SDRAM_1_SIZE 0x08000000 /* DDR size 128MB */
-#define DDR_4BANKS /* 4-bank DDR2 (128MB)
*/
/*====================*/
/* Serial Driver info */
/*====================*/
diff --git a/include/configs/davinci_sonata.h
b/include/configs/davinci_sonata.h
index de8c4fa..5201a48 100644
--- a/include/configs/davinci_sonata.h
+++ b/include/configs/davinci_sonata.h
@@ -60,6 +60,24 @@
#define CFG_TIMERBASE 0x01c21400 /* use timer 0 */
#define CFG_HZ_CLOCK 27000000 /* Timer Input clock
freq */
#define CFG_HZ 1000
+#define CFG_DAVINCI_PINMUX_0 0x00000c1f
+#define CFG_DAVINCI_WAITCFG 0x00000000
+#define CFG_DAVINCI_ACFG2 0x3ffffffd /* CE configs */
+#define CFG_DAVINCI_ACFG3 0x3ffffffd
+#define CFG_DAVINCI_ACFG4 0x3ffffffd
+#define CFG_DAVINCI_ACFG5 0x3ffffffd
+#undef CFG_DAVINCI_NANDCE /* When using NAND,
define 2,3 or 4 */
+#define CFG_DAVINCI_DDRCTL 0x50006405 /* DDR timing config */
+#define CFG_DAVINCI_SDREF 0x000005c3
+#define CFG_DAVINCI_SDCFG 0x00178632 /* 8 banks */
+/*#define CFG_DAVINCI_SDCFG 0x00178622*/ /* 4 banks */
+#define CFG_DAVINCI_SDTIM0 0x28923211
+#define CFG_DAVINCI_SDTIM1 0x0016c722
+#define CFG_DAVINCI_MMARG_BRF0 0x00444400
+#define CFG_DAVINCI_PLL1_PLLM 0x15 /* DM6446 = 0x15, DM6441
= 0x12, DM6441_LV = 0x0e */
+#define CFG_DAVINCI_PLL2_PLLM 0x17 /* 162 MHz */
+#define CFG_DAVINCI_PLL2_DIV1 0x0b /* 54 MHz */
+#define CFG_DAVINCI_PLL2_DIV2 0x01
/*====================================================*/
/* EEPROM definitions for Atmel 24C256BN SEEPROM chip */
/* on Sonata/DV_EVM board. No EEPROM on schmoogie. */
--
1.5.3.7
Pieter Voorthuijsen
Prodrive B.V.
Science Park Eindhoven
P.O. box 28030
5602 JA Eindhoven
The Netherlands
Email [EMAIL PROTECTED]
Tel: +31-40-2676258
Fax: +31-40-2676201
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