[U-Boot] [RFC][PATCH 13/36] sc520 - Define MMCR address in include file
Graeme Russ
graeme.russ at gmail.com
Mon Jan 3 20:46:33 CET 2011
---
arch/i386/cpu/sc520/sc520.c | 2 +-
arch/i386/cpu/sc520/sc520_asm.S | 49 ++++++++++++++++---------------------
arch/i386/include/asm/ic/sc520.h | 34 +++++++++++++++++++++----
board/eNET/eNET_start16.S | 7 +++--
4 files changed, 54 insertions(+), 38 deletions(-)
diff --git a/arch/i386/cpu/sc520/sc520.c b/arch/i386/cpu/sc520/sc520.c
index 8e8986b..e75825b 100644
--- a/arch/i386/cpu/sc520/sc520.c
+++ b/arch/i386/cpu/sc520/sc520.c
@@ -38,7 +38,7 @@ DECLARE_GLOBAL_DATA_PTR;
* unsigned long init_sc520_dram(void)
*/
-volatile sc520_mmcr_t *sc520_mmcr = (sc520_mmcr_t *)0xfffef000;
+volatile sc520_mmcr_t *sc520_mmcr = (sc520_mmcr_t *)SC520_MMCR_BASE;
int cpu_init_f(void)
{
diff --git a/arch/i386/cpu/sc520/sc520_asm.S b/arch/i386/cpu/sc520/sc520_asm.S
index 63c14b7..f2bc47b 100644
--- a/arch/i386/cpu/sc520/sc520_asm.S
+++ b/arch/i386/cpu/sc520/sc520_asm.S
@@ -142,16 +142,9 @@
*/
#include <config.h>
+#include <asm/ic/sc520.h>
.section .text
-.equ DRCCTL, 0x0fffef010 /* DRAM control register */
-.equ DRCTMCTL, 0x0fffef012 /* DRAM timing control register */
-.equ DRCCFG, 0x0fffef014 /* DRAM bank configuration register */
-.equ DRCBENDADR, 0x0fffef018 /* DRAM bank ending address register */
-.equ ECCCTL, 0x0fffef020 /* DRAM ECC control register */
-.equ ECCINT, 0x0fffefd18 /* DRAM ECC nmi-INT mapping */
-.equ DBCTL, 0x0fffef040 /* DRAM buffer control register */
-
.equ CACHELINESZ, 0x00000010 /* size of our cache line (read buffer) */
.equ COL11_ADR, 0x0e001e00 /* 11 col addrs */
.equ COL10_ADR, 0x0e000e00 /* 10 col addrs */
@@ -179,27 +172,27 @@ mem_init:
/* initialize dram controller registers */
xorw %ax, %ax
- movl $DBCTL, %edi
+ movl $SC520_DBCTL, %edi
movb %al, (%edi) /* disable write buffer */
- movl $ECCCTL, %edi
+ movl $SC520_ECCCTL, %edi
movb %al, (%edi) /* disable ECC */
- movl $DRCTMCTL, %edi
+ movl $SC520_DRCTMCTL, %edi
movb $0x1e, %al /* Set SDRAM timing for slowest */
movb %al, (%edi)
/* setup loop to do 4 external banks starting with bank 3 */
movl $0xff000000, %eax /* enable last bank and setup */
- movl $DRCBENDADR, %edi /* ending address register */
+ movl $SC520_DRCBENDADR, %edi /* ending address register */
movl %eax, (%edi)
- movl $DRCCFG, %edi /* setup */
+ movl $SC520_DRCCFG, %edi /* setup */
movw $0xbbbb, %ax /* dram config register for */
movw %ax, (%edi)
/* issue a NOP to all DRAMs */
- movl $DRCCTL, %edi /* setup DRAM control register with */
+ movl $SC520_DRCCTL, %edi /* setup DRAM control register with */
movb $0x01, %al /* Disable refresh,disable write buffer */
movb %al, (%edi)
movl $CACHELINESZ, %esi /* just a dummy address to write for */
@@ -409,7 +402,7 @@ bad_reint:
/*
* issue all banks precharge
*/
- movl $DRCCTL, %esi /* setup DRAM control register with */
+ movl $SC520_DRCCTL, %esi /* setup DRAM control register with */
movb $0x02, %al /* All banks precharge */
movb %al, (%esi)
movl $CACHELINESZ, %esi /* address to init read buffer */
@@ -418,7 +411,7 @@ bad_reint:
/*
* update ENDING ADDRESS REGISTER
*/
- movl $DRCBENDADR, %edi /* DRAM ending address register */
+ movl $SC520_DRCBENDADR, %edi /* DRAM ending address register */
movl %ecx, %ebx
addl %ebx, %edi
movb %dh, (%edi)
@@ -435,7 +428,7 @@ bad_reint:
shlw %cl, %bx
notw %bx
xchgw %cx, %ax
- movl $DRCCFG, %edi
+ movl $SC520_DRCCFG, %edi
movw (%edi), %ax
andw %bx, %ax
orw %dx, %ax
@@ -444,7 +437,7 @@ bad_reint:
decw %cx
movl %ecx, %ebx
- movl $DRCBENDADR, %edi /* DRAM ending address register */
+ movl $SC520_DRCBENDADR, %edi /* DRAM ending address register */
movb $0xff, %al
addl %ebx, %edi
movb %al, (%edi)
@@ -452,7 +445,7 @@ bad_reint:
/*
* set control register to NORMAL mode
*/
- movl $DRCCTL, %esi /* setup DRAM control register with */
+ movl $SC520_DRCCTL, %esi /* setup DRAM control register with */
movb $0x00, %al /* Normal mode value */
movb %al, (%esi)
movl $CACHELINESZ, %esi /* address to init read buffer */
@@ -460,7 +453,7 @@ bad_reint:
jmp nextbank
cleanup:
- movl $DRCBENDADR, %edi /* DRAM ending address register */
+ movl $SC520_DRCBENDADR, %edi /* DRAM ending address register */
movw $0x04, %cx
xorw %ax, %ax
cleanuplp:
@@ -482,7 +475,7 @@ emptybank:
#if defined CONFIG_SYS_SDRAM_DRCTMCTL
/* just have your hardware desinger _GIVE_ you what you need here! */
- movl $DRCTMCTL, %edi
+ movl $SC520_DRCTMCTL, %edi
movb $CONFIG_SYS_SDRAM_DRCTMCTL, %al
movb %al, (%edi)
#else
@@ -491,7 +484,7 @@ emptybank:
* Set the CAS latency now since it is hard to do
* when we run from the RAM
*/
- movl $DRCTMCTL, %edi /* DRAM timing register */
+ movl $SC520_DRCTMCTL, %edi /* DRAM timing register */
movb (%edi), %al
#ifdef CONFIG_SYS_SDRAM_CAS_LATENCY_2T
andb $0xef, %al
@@ -502,13 +495,13 @@ emptybank:
movb %al, (%edi)
#endif
#endif
- movl $DRCCTL, %edi /* DRAM Control register */
+ movl $SC520_DRCCTL, %edi /* DRAM Control register */
movb $0x03, %al /* Load mode register cmd */
movb %al, (%edi)
movw %ax, (%esi)
- movl $DRCCTL, %edi /* DRAM Control register */
+ movl $SC520_DRCCTL, %edi /* DRAM Control register */
movb $0x18, %al /* Enable refresh and NORMAL mode */
movb %al, (%edi)
@@ -553,16 +546,16 @@ set_ecc:
/* enable read, write buffers */
movb $0x11, %al
- movl $DBCTL, %edi
+ movl $SC520_DBCTL, %edi
movb %al, (%edi)
/* enable NMI mapping for ECC */
- movl $ECCINT, %edi
+ movl $SC520_ECCINT, %edi
movb $0x10, %al
movb %al, (%edi)
/* Turn on ECC */
- movl $ECCCTL, %edi
+ movl $SC520_ECCCTL, %edi
movb $0x05, %al
movb %al,(%edi)
@@ -576,7 +569,7 @@ out:
*/
.globl get_mem_size
get_mem_size:
- movl $DRCBENDADR, %edi /* DRAM ending address register */
+ movl $SC520_DRCBENDADR, %edi /* DRAM ending address register */
bank0: movl (%edi), %eax
movl %eax, %ecx
diff --git a/arch/i386/include/asm/ic/sc520.h b/arch/i386/include/asm/ic/sc520.h
index 053d9c6..fe217ea 100644
--- a/arch/i386/include/asm/ic/sc520.h
+++ b/arch/i386/include/asm/ic/sc520.h
@@ -256,12 +256,34 @@ extern volatile sc520_mmcr_t *sc520_mmcr;
#endif
-/* MMCR Offsets (required for assembler code */
-#define SC520_DBCTL 0x0040 /* SDRAM Buffer Control Register */
-#define SC520_PAR14 0x00c0 /* Programmable Address Region 14 Register */
-#define SC520_PAR15 0x00c4 /* Programmable Address Region 15 Register */
-#define SC520_SWTMRMILLI 0x0c60 /* Software Timer Millisecond Count */
-#define SC520_SWTMRMICRO 0x0c62 /* Software Timer Microsecond Count */
+/* Memory Mapped Control Registers (MMCR) Base Address */
+#define SC520_MMCR_BASE 0xfffef000
+
+/* MMCR Addresses (required for assembler code) */
+#define SC520_DRCCTL (SC520_MMCR_BASE + 0x010)
+#define SC520_DRCTMCTL (SC520_MMCR_BASE + 0x012)
+#define SC520_DRCCFG (SC520_MMCR_BASE + 0x014)
+#define SC520_DRCBENDADR (SC520_MMCR_BASE + 0x018)
+#define SC520_ECCCTL (SC520_MMCR_BASE + 0x020)
+#define SC520_DBCTL (SC520_MMCR_BASE + 0x040)
+#define SC520_ECCINT (SC520_MMCR_BASE + 0xd18)
+
+#define SC520_PAR0 (SC520_MMCR_BASE + 0x088)
+#define SC520_PAR1 (SC520_PAR0 + (0x04 * 1))
+#define SC520_PAR2 (SC520_PAR0 + (0x04 * 2))
+#define SC520_PAR3 (SC520_PAR0 + (0x04 * 3))
+#define SC520_PAR4 (SC520_PAR0 + (0x04 * 4))
+#define SC520_PAR5 (SC520_PAR0 + (0x04 * 5))
+#define SC520_PAR6 (SC520_PAR0 + (0x04 * 6))
+#define SC520_PAR7 (SC520_PAR0 + (0x04 * 7))
+#define SC520_PAR8 (SC520_PAR0 + (0x04 * 8))
+#define SC520_PAR9 (SC520_PAR0 + (0x04 * 9))
+#define SC520_PAR10 (SC520_PAR0 + (0x04 * 10))
+#define SC520_PAR11 (SC520_PAR0 + (0x04 * 11))
+#define SC520_PAR12 (SC520_PAR0 + (0x04 * 12))
+#define SC520_PAR13 (SC520_PAR0 + (0x04 * 13))
+#define SC520_PAR14 (SC520_PAR0 + (0x04 * 14))
+#define SC520_PAR15 (SC520_PAR0 + (0x04 * 15))
/* MMCR Register bits (not all of them :) ) */
diff --git a/board/eNET/eNET_start16.S b/board/eNET/eNET_start16.S
index 06cfd55..183309c 100644
--- a/board/eNET/eNET_start16.S
+++ b/board/eNET/eNET_start16.S
@@ -30,6 +30,7 @@
/* #include <asm/ic/sc520_defs.h> */
#include "hardware.h"
+#include <asm/ic/sc520.h>
.text
.section .start16, "ax"
@@ -46,17 +47,17 @@ board_init16:
movw %ax, %ds
/* Map PAR for Boot Flash (BOOTCS, 512kB @ 0x380000000) */
- movl $0x00c0, %edi /* SC520_PAR14 */
+ movl $(SC520_PAR14 - SC520_MMCR_BASE), %edi
movl $0x8bfff800, %eax /* TODO: Check this */
movl %eax, (%di)
/* Map PAR for LED, Hex Switches (GPCS6, 20 Bytes @ 0x1000) */
- movl $0x00c4, %edi /* SC520_PAR15 */
+ movl $(SC520_PAR15 - SC520_MMCR_BASE), %edi
movl $0x38201000, %eax
movl %eax, (%di)
/* Disable SDRAM write buffer */
- movw $0x0040, %di /* SC520_DBCTL */
+ movw $(SC520_DBCTL - SC520_MMCR_BASE), %di
xorw %ax, %ax
movb %al, (%di)
--
1.7.1.422.g049e9
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