Update omap5912osk board support
- Fix OMAP support that omap5912osk compiles in current source tree
- Update with code from "http://omap.spectrumdigital.com/osk5912"
to fix problems with DDR initialization
- Fix timer setup
- Use CFI flash driver and support complete 32MB of onboard flash
- Add "print_cpuinfo()" and "checkboard()" functions to display
CPU (with frequency) and Board infos
Patch by Stefan Roese, 10 May 2006
diff --git a/board/omap5912osk/lowlevel_init.S b/board/omap5912osk/lowlevel_init.S
index 3b9633a..d2d429e 100644
--- a/board/omap5912osk/lowlevel_init.S
+++ b/board/omap5912osk/lowlevel_init.S
@@ -41,6 +41,13 @@
.globl lowlevel_init
lowlevel_init:
+ /*------------------------------------------------------*
+ * Ensure i-cache is enabled *
+ * To configure TC regs without fetching instruction *
+ *------------------------------------------------------*/
+ mrc p15, 0, r0, c1, c0
+ orr r0, r0, #0x1000
+ mcr p15, 0, r0, c1, c0
/*------------------------------------------------------*
*mask all IRQs by setting all bits in the INTMR default*
@@ -59,33 +66,34 @@
str r1, [r0]
/*------------------------------------------------------*
- * Set up ARM CLM registers (IDLECT2) *
+ * Set up ARM CLM registers (IDLECT2) *
*------------------------------------------------------*/
ldr r0, REG_ARM_IDLECT2
ldr r1, VAL_ARM_IDLECT2
str r1, [r0]
/*------------------------------------------------------*
- * Set up ARM CLM registers (IDLECT3) *
+ * Set up ARM CLM registers (IDLECT3) *
*------------------------------------------------------*/
ldr r0, REG_ARM_IDLECT3
ldr r1, VAL_ARM_IDLECT3
str r1, [r0]
-
- mov r1, #0x01 /* PER_EN bit */
+ mov r1, #0x01 /* PER_EN bit */
ldr r0, REG_ARM_RSTCT2
- strh r1, [r0] /* CLKM; Peripheral reset. */
+ strh r1, [r0] /* CLKM; Peripheral reset. */
- /* Set CLKM to Sync-Scalable */
- /* I supposedly need to enable the dsp clock before switching */
- mov r1, #0x0000
+ /* Set CLKM to Sync-Scalable */
+ mov r1, #0x1000
ldr r0, REG_ARM_SYSST
- strh r1, [r0]
- mov r0, #0x400
-1:
- subs r0, r0, #0x1 /* wait for any bubbles to finish */
+
+ mov r2, #0
+1: cmp r2, #1
+ streqh r1, [r0]
+ add r2, r2, #1
+ cmp r2, #0x100 /* wait for any bubbles to finish */
bne 1b
+
ldr r1, VAL_ARM_CKCTL
ldr r0, REG_ARM_CKCTL
strh r1, [r0]
@@ -107,17 +115,16 @@
ldr r1, VAL_DPLL1_CTL
ldr r0, REG_DPLL1_CTL
strh r1, [r0]
- ands r1, r1, #0x10 /* Check if PLL is enabled. */
- beq lock_end /* Do not look for lock if BYPASS selected */
+ ands r1, r1, #0x10 /* Check if PLL is enabled. */
+ beq lock_end /* Do not look for lock if BYPASS selected */
2:
ldrh r1, [r0]
- ands r1, r1, #0x01 /* Check the LOCK bit.*/
- beq 2b /* loop until bit goes hi. */
+ ands r1, r1, #0x01 /* Check the LOCK bit.*/
+ beq 2b /* loop until bit goes hi. */
lock_end:
-
/*------------------------------------------------------*
- * Turn off the watchdog during init... *
+ * Turn off the watchdog during init... *
*------------------------------------------------------*/
ldr r0, REG_WATCHDOG
ldr r1, WATCHDOG_VAL1
@@ -143,30 +150,49 @@
tst r1, #0x10
bne watch2Wait
-
/* Set memory timings corresponding to the new clock speed */
+ ldr r3, VAL_SDRAM_CONFIG_SDF0
/* Check execution location to determine current execution location
* and branch to appropriate initialization code.
*/
- /* Load physical SDRAM base. */
- mov r0, #0x10000000
- /* Get current execution location. */
- mov r1, pc
- /* Compare. */
- cmp r1, r0
- /* Skip over EMIF-fast initialization if running from SDRAM. */
- bge skip_sdram
+ mov r0, #0x10000000 /* Load physical SDRAM base. */
+ mov r1, pc /* Get current execution location. */
+ cmp r1, r0 /* Compare. */
+ bge skip_sdram /* Skip over EMIF-fast initialization if running from SDRAM. */
+
+ /* identify the device revision, -- TMX or TMP(TMS) */
+ ldr r0, REG_DEVICE_ID
+ ldr r1, [r0]
+
+ ldr r0, VAL_DEVICE_ID_TMP
+ mov r1, r1, lsl #15
+ mov r1, r1, lsr #16
+ cmp r0, r1
+ bne skip_TMP_Patch
+
+ /* Enable TMP/TMS device new features */
+ mov r0, #1
+ ldr r1, REG_TC_EMIFF_DOUBLER
+ str r0, [r1]
+
+ /* Enable new ac parameters */
+ mov r0, #0x0b
+ ldr r1, REG_SDRAM_CONFIG2
+ str r0, [r1]
+
+ ldr r3, VAL_SDRAM_CONFIG_SDF1
+
+skip_TMP_Patch:
/*
* Delay for SDRAM initialization.
*/
- mov r3, #0x1800 /* value should be checked */
+ mov r0, #0x1800 /* value should be checked */
3:
- subs r3, r3, #0x1 /* Decrement count */
+ subs r0, r0, #0x1 /* Decrement count */
bne 3b
-
/*
* Set SDRAM control values. Disable refresh before MRS command.
*/
@@ -178,14 +204,15 @@
/* config register */
ldr r0, REG_SDRAM_CONFIG
- ldr r1, SDRAM_CONFIG_VAL
- str r1, [r0]
+ str r3, [r0]
/* manual command register */
ldr r0, REG_SDRAM_MANUAL_CMD
+
/* issue set cke high */
mov r1, #CMD_SDRAM_CKE_SET_HIGH
str r1, [r0]
+
/* issue nop */
mov r1, #CMD_SDRAM_NOP
str r1, [r0]
@@ -228,25 +255,23 @@
str r1, [r0]
/* delay loop */
- mov r2, #0x0100
+ mov r0, #0x0100
waitMDDR2:
- subs r2, r2, #1
+ subs r0, r0, #1
bne waitMDDR2
/*
* Delay for SDRAM initialization.
*/
- mov r3, #0x1800
+ mov r0, #0x1800
4:
- subs r3, r3, #1 /* Decrement count. */
+ subs r0, r0, #1 /* Decrement count. */
bne 4b
b common_tc
skip_sdram:
-
ldr r0, REG_SDRAM_CONFIG
- ldr r1, SDRAM_CONFIG_VAL
- str r1, [r0]
+ str r3, [r0]
common_tc:
/* slow interface */
@@ -257,10 +282,15 @@
ldr r1, VAL_TC_EMIFS_CS1_CONFIG
ldr r0, REG_TC_EMIFS_CS1_CONFIG
str r1, [r0] /* Chip Select 1 */
+
ldr r1, VAL_TC_EMIFS_CS3_CONFIG
ldr r0, REG_TC_EMIFS_CS3_CONFIG
str r1, [r0] /* Chip Select 3 */
+ ldr r1, VAL_TC_EMIFS_DWS
+ ldr r0, REG_TC_EMIFS_DWS
+ str r1, [r0] /* Enable EMIFS.RDY for CS1 (ether) */
+
#ifdef CONFIG_H2_OMAP1610
/* inserting additional 2 clock cycle hold time for LAN */
ldr r0, REG_TC_EMIFS_CS1_ADVANCED
@@ -282,8 +312,9 @@
/* the literal pools origin */
.ltorg
-
-REG_TC_EMIFS_CONFIG: /* 32 bits */
+REG_DEVICE_ID: /* 32 bits */
+ .word 0xfffe2004
+REG_TC_EMIFS_CONFIG:
.word 0xfffecc0c
REG_TC_EMIFS_CS0_CONFIG: /* 32 bits */
.word 0xfffecc10
@@ -293,7 +324,8 @@
.word 0xfffecc18
REG_TC_EMIFS_CS3_CONFIG: /* 32 bits */
.word 0xfffecc1c
-
+REG_TC_EMIFS_DWS: /* 32 bits */
+ .word 0xfffecc40
#ifdef CONFIG_H2_OMAP1610
REG_TC_EMIFS_CS1_ADVANCED: /* 32 bits */
.word 0xfffecc54
@@ -302,18 +334,17 @@
/* MPU clock/reset/power mode control registers */
REG_ARM_CKCTL: /* 16 bits */
.word 0xfffece00
-
REG_ARM_IDLECT3: /* 16 bits */
.word 0xfffece24
REG_ARM_IDLECT2: /* 16 bits */
.word 0xfffece08
REG_ARM_IDLECT1: /* 16 bits */
.word 0xfffece04
-
REG_ARM_RSTCT2: /* 16 bits */
.word 0xfffece14
REG_ARM_SYSST: /* 16 bits */
.word 0xfffece18
+
/* DPLL control registers */
REG_DPLL1_CTL: /* 16 bits */
.word 0xfffecf00
@@ -335,6 +366,10 @@
counter @8192 rows, 10 ns, 8 burst */
REG_SDRAM_CONFIG:
.word 0xfffecc20
+REG_SDRAM_CONFIG2:
+ .word 0xfffecc3c
+REG_TC_EMIFF_DOUBLER: /* 32 bits */
+ .word 0xfffecc60
/* Operation register */
REG_SDRAM_OPERATION:
@@ -356,35 +391,47 @@
REG_DLL_WRT_CONTROL:
.word 0xfffecc68
DLL_WRT_CONTROL_VAL:
- .word 0x03f00002
+ .word 0x03f00002 /* Phase of 72deg, write offset +31 */
/* URD DLL register */
REG_DLL_URD_CONTROL:
.word 0xfffeccc0
DLL_URD_CONTROL_VAL:
- .word 0x00800002
+ .word 0x00800002 /* Phase of 72deg, read offset +31 */
/* LRD DLL register */
REG_DLL_LRD_CONTROL:
.word 0xfffecccc
+DLL_LRD_CONTROL_VAL:
+ .word 0x00800002 /* read offset +31 */
REG_WATCHDOG:
.word 0xfffec808
+WATCHDOG_VAL1:
+ .word 0x000000f5
+WATCHDOG_VAL2:
+ .word 0x000000a0
REG_MPU_LOAD_TIMER:
- .word 0xfffec600
+ .word 0xfffec504
REG_MPU_CNTL_TIMER:
.word 0xfffec500
+VAL_MPU_LOAD_TIMER:
+ .word 0xffffffff
+VAL_MPU_CNTL_TIMER:
+ .word 0xffffffa1
/* 96 MHz Samsung Mobile DDR */
-SDRAM_CONFIG_VAL:
- .word 0x001200f4
+/* Original setting for TMX device */
+VAL_SDRAM_CONFIG_SDF0:
+ .word 0x0014e6fe
-DLL_LRD_CONTROL_VAL:
- .word 0x00800002
+/* NEW_SYS_FREQ mode (valid only TMP/TMS devices) */
+VAL_SDRAM_CONFIG_SDF1:
+ .word 0x0114e6fe
VAL_ARM_CKCTL:
- .word 0x3000
+ .word 0x2000 /* was: 0x3000, now use CLK_REF for timer input */
VAL_DPLL1_CTL:
.word 0x2830
@@ -396,7 +443,11 @@
VAL_TC_EMIFS_CS2_CONFIG:
.word 0x000055f0
VAL_TC_EMIFS_CS3_CONFIG:
- .word 0x88011131
+ .word 0x88013141
+VAL_TC_EMIFS_DWS: /* Enable EMIFS.RDY for CS1 access (ether) */
+ .word 0x000000c0
+VAL_DEVICE_ID_TMP: /* TMP/TMS=0xb65f, TMX=0xb58c */
+ .word 0xb65f
#endif
#ifdef CONFIG_H2_OMAP1610
@@ -407,36 +458,20 @@
VAL_TC_EMIFS_CS2_CONFIG:
.word 0xf800f22a
VAL_TC_EMIFS_CS3_CONFIG:
- .word 0x88011131
+ .word 0x88013141
VAL_TC_EMIFS_CS1_ADVANCED:
.word 0x00000022
#endif
-VAL_TC_EMIFF_SDRAM_CONFIG:
- .word 0x010290fc
-VAL_TC_EMIFF_MRS:
- .word 0x00000027
-
VAL_ARM_IDLECT1:
.word 0x00000400
-
VAL_ARM_IDLECT2:
.word 0x00000886
VAL_ARM_IDLECT3:
.word 0x00000015
-WATCHDOG_VAL1:
- .word 0x000000f5
-WATCHDOG_VAL2:
- .word 0x000000a0
-
-VAL_MPU_LOAD_TIMER:
- .word 0xffffffff
-VAL_MPU_CNTL_TIMER:
- .word 0xffffffa1
-
/* command values */
-.equ CMD_SDRAM_NOP, 0x00000000
-.equ CMD_SDRAM_PRECHARGE, 0x00000001
-.equ CMD_SDRAM_AUTOREFRESH, 0x00000002
-.equ CMD_SDRAM_CKE_SET_HIGH, 0x00000007
+.equ CMD_SDRAM_NOP, 0x00000000
+.equ CMD_SDRAM_PRECHARGE, 0x00000001
+.equ CMD_SDRAM_AUTOREFRESH, 0x00000002
+.equ CMD_SDRAM_CKE_SET_HIGH, 0x00000007
diff --git a/board/omap5912osk/omap5912osk.c b/board/omap5912osk/omap5912osk.c
index e9e6b0e..6993b13 100644
--- a/board/omap5912osk/omap5912osk.c
+++ b/board/omap5912osk/omap5912osk.c
@@ -288,3 +288,21 @@
*SW_CLOCK_REQUEST |= UART1_48MHZ_ENABLE;
}
+
+/*
+ * Check Board Identity
+ */
+int checkboard(void)
+{
+ char *s = getenv("serial#");
+
+ puts("Board: OSK5912");
+
+ if (s != NULL) {
+ puts(", serial# ");
+ puts(s);
+ }
+ putc('\n');
+
+ return (0);
+}