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authorwdenk <wdenk>2003-09-13 19:01:12 +0000
committerwdenk <wdenk>2003-09-13 19:01:12 +0000
commit531716e1710083f91d9fa351f89d18e271b5c577 (patch)
treeb16f8f3683078ee64ac2b87c2f3c1c37c60f9a93
parentb70e7a00c8bc6feb5f5718ba1c6d4fedb294483a (diff)
downloadu-boot-linaro-stable-LABEL_2003_09_13_2100.tar.gz
* Patch by David Müller, 13 Sep 2003:LABEL_2003_09_13_2100
various changes to VCMA9 board specific files * Add I2C support for MGT5100 / MPC5200
-rw-r--r--CHANGELOG5
-rw-r--r--README3
-rw-r--r--board/mpl/vcma9/cmd_vcma9.c46
-rw-r--r--board/mpl/vcma9/config.mk14
-rw-r--r--board/mpl/vcma9/memsetup.S59
-rw-r--r--board/mpl/vcma9/vcma9.c127
-rw-r--r--board/mpl/vcma9/vcma9.h26
-rw-r--r--cpu/mpc5xxx/Makefile2
-rw-r--r--cpu/mpc5xxx/i2c.c338
-rw-r--r--include/configs/IceCube.h20
-rw-r--r--include/configs/VCMA9.h9
-rw-r--r--include/mpc5xxx.h29
-rw-r--r--rtc/s3c24x0_rtc.c18
13 files changed, 617 insertions, 79 deletions
diff --git a/CHANGELOG b/CHANGELOG
index b034331a5..c058cc438 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,11 @@
Changes for U-Boot 1.0.0:
======================================================================
+* Patch by David Müller, 13 Sep 2003:
+ various changes to VCMA9 board specific files
+
+* Add I2C support for MGT5100 / MPC5200
+
* Patch by Rune Torgersen, 11 Sep 2003:
Changed default memory option on MPC8266ADS to NOT be Page Based
Interleave, since this doesn't work very well with the standard
diff --git a/README b/README
index 0503ccb14..e431c29a7 100644
--- a/README
+++ b/README
@@ -203,6 +203,7 @@ Directory Hierarchy:
- board/mpl/common Common files for MPL boards
- board/mpl/pip405 Files specific to PIP405 boards
- board/mpl/mip405 Files specific to MIP405 boards
+- board/mpl/vcma9 Files specific to VCMA9 boards
- board/musenki Files specific to MUSEKNI boards
- board/mvs1 Files specific to MVS1 boards
- board/nx823 Files specific to NX823 boards
@@ -363,7 +364,7 @@ The following options need to be configured:
CONFIG_IMPA7, CONFIG_LART, CONFIG_LUBBOCK,
CONFIG_INNOVATOROMAP1510, CONFIG_INNOVATOROMAP1610
CONFIG_SHANNON, CONFIG_SMDK2400, CONFIG_SMDK2410,
- CONFIG_TRAB, CONFIG_AT91RM9200DK
+ CONFIG_TRAB, CONFIG_VCMA9, CONFIG_AT91RM9200DK
- CPU Module Type: (if CONFIG_COGENT is defined)
diff --git a/board/mpl/vcma9/cmd_vcma9.c b/board/mpl/vcma9/cmd_vcma9.c
index 32fa33403..3b0453521 100644
--- a/board/mpl/vcma9/cmd_vcma9.c
+++ b/board/mpl/vcma9/cmd_vcma9.c
@@ -41,9 +41,12 @@ static uchar cs8900_chksum(ushort data)
#endif
extern void print_vcma9_info(void);
-extern int vcma9_cantest(void);
+extern int vcma9_cantest(int);
extern int vcma9_nandtest(void);
-extern int vcma9_dactest(void);
+extern int vcma9_nanderase(void);
+extern int vcma9_nandread(ulong);
+extern int vcma9_nandwrite(ulong);
+extern int vcma9_dactest(int);
extern int do_mplcommon(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
/* ------------------------------------------------------------------------- */
@@ -126,18 +129,53 @@ int do_vcma9(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
#endif
#if 0
if (strcmp(argv[1], "cantest") == 0) {
- vcma9_cantest();
+ if (argc >= 3)
+ vcma9_cantest(strcmp(argv[2], "s") ? 0 : 1);
+ else
+ vcma9_cantest(0);
return 0;
}
if (strcmp(argv[1], "nandtest") == 0) {
vcma9_nandtest();
return 0;
}
+ if (strcmp(argv[1], "nanderase") == 0) {
+ vcma9_nanderase();
+ return 0;
+ }
+ if (strcmp(argv[1], "nandread") == 0) {
+ ulong offset = 0;
+
+ if (argc >= 3)
+ offset = simple_strtoul(argv[2], NULL, 16);
+
+ vcma9_nandread(offset);
+ return 0;
+ }
+ if (strcmp(argv[1], "nandwrite") == 0) {
+ ulong offset = 0;
+
+ if (argc >= 3)
+ offset = simple_strtoul(argv[2], NULL, 16);
+
+ vcma9_nandwrite(offset);
+ return 0;
+ }
if (strcmp(argv[1], "dactest") == 0) {
- vcma9_dactest();
+ if (argc >= 3)
+ vcma9_dactest(strcmp(argv[2], "s") ? 0 : 1);
+ else
+ vcma9_dactest(0);
return 0;
}
#endif
return (do_mplcommon(cmdtp, flag, argc, argv));
}
+
+U_BOOT_CMD(
+ vcma9, 6, 1, do_vcma9,
+ "vcma9 - VCMA9 specific commands\n",
+ "flash mem [SrcAddr]\n - updates U-Boot with image in memory\n"
+);
+
diff --git a/board/mpl/vcma9/config.mk b/board/mpl/vcma9/config.mk
index 95d69cc6c..942d42ef6 100644
--- a/board/mpl/vcma9/config.mk
+++ b/board/mpl/vcma9/config.mk
@@ -1,5 +1,5 @@
#
-# (C) Copyright 2002
+# (C) Copyright 2002, 2003
# David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
#
# MPL VCMA9 board with S3C2410X (ARM920T) cpu
@@ -8,17 +8,17 @@
#
#
-# MPL VCMA9 has 1 bank of 64 MB DRAM
-#
-# 3000'0000 to 3400'0000
+# MPL VCMA9 has 1 bank of minimal 16 MB DRAM
+# from 0x30000000
#
# Linux-Kernel is expected to be at 3000'8000, entry 3000'8000
-# optionally with a ramdisk at 3080'0000
+# optionally with a ramdisk at 3040'0000
#
-# we load ourself to 33F8'0000
+# we load ourself to 30F8'0000
#
-# download area is 3300'0000
+# download area is 3080'0000
#
+#TEXT_BASE = 0x30F80000
TEXT_BASE = 0x33F80000
diff --git a/board/mpl/vcma9/memsetup.S b/board/mpl/vcma9/memsetup.S
index 7b4193d0e..ab6590153 100644
--- a/board/mpl/vcma9/memsetup.S
+++ b/board/mpl/vcma9/memsetup.S
@@ -34,7 +34,9 @@
/* some parameters for the board */
-#define BWSCON 0x48000000
+#define BWSCON 0x48000000
+#define PLD_BASE 0x2C000000
+#define SDRAM_REG 0x2C000106
/* BWSCON */
#define DW8 (0x0)
@@ -43,6 +45,9 @@
#define WAIT (0x1<<2)
#define UBLB (0x1<<3)
+/* BANKSIZE */
+#define BURST_EN (0x1<<7)
+
#define B1_BWSCON (DW16)
#define B2_BWSCON (DW32)
#define B3_BWSCON (DW32)
@@ -130,24 +135,39 @@ memsetup:
/* memory control configuration */
/* make r0 relative the current location so that it */
/* reads SMRDATA out of FLASH rather than memory ! */
- ldr r0, =SMRDATA
+ ldr r0, =CSDATA
ldr r1, _TEXT_BASE
sub r0, r0, r1
ldr r1, =BWSCON /* Bus Width Status Controller */
- add r2, r0, #13*4
+ add r2, r0, #CSDATA_END-CSDATA
0:
ldr r3, [r0], #4
str r3, [r1], #4
cmp r2, r0
bne 0b
+ /* PLD access is now possible */
+ /* r0 == SDRAMDATA */
+ /* r1 == SDRAM controller regs */
+ ldr r2, =PLD_BASE
+ ldrb r3, [r2, #SDRAM_REG-PLD_BASE]
+ mov r4, #SDRAMDATA1_END-SDRAMDATA
+ /* calculate start and end point */
+ mla r0, r3, r4, r0
+ add r2, r0, r4
+0:
+ ldr r3, [r0], #4
+ str r3, [r1], #4
+ cmp r2, r0
+ bne 0b
+
/* everything is fine now */
mov pc, lr
.ltorg
/* the literal pools origin */
-SMRDATA:
+CSDATA:
.word (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))
.word ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC))
.word ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC))
@@ -155,9 +175,38 @@ SMRDATA:
.word ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC))
.word ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC))
.word ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC))
+CSDATA_END:
+
+SDRAMDATA:
+/* 4Mx8x4 */
+ .word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
+ .word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
+ .word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
+ .word 0x32 + BURST_EN
+ .word 0x30
+ .word 0x30
+SDRAMDATA1_END:
+
+/* 8Mx8x4 (not implemented yet) */
+ .word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
+ .word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
+ .word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
+ .word 0x32 + BURST_EN
+ .word 0x30
+ .word 0x30
+
+/* 2Mx8x4 (not implemented yet) */
+ .word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
+ .word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
+ .word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
+ .word 0x32 + BURST_EN
+ .word 0x30
+ .word 0x30
+
+/* 4Mx8x2 (not implemented yet) */
.word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
.word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
.word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
- .word 0x32
+ .word 0x32 + BURST_EN
.word 0x30
.word 0x30
diff --git a/board/mpl/vcma9/vcma9.c b/board/mpl/vcma9/vcma9.c
index 359e56576..33cec0252 100644
--- a/board/mpl/vcma9/vcma9.c
+++ b/board/mpl/vcma9/vcma9.c
@@ -130,16 +130,6 @@ int board_init(void)
return 0;
}
-int dram_init(void)
-{
- DECLARE_GLOBAL_DATA_PTR;
-
- gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
- gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
-
- return 0;
-}
-
/*
* NAND flash initialization.
*/
@@ -162,9 +152,16 @@ static inline void NF_Reset(void)
static inline void NF_Init(void)
{
+#if 0 /* a little bit too optimistic */
#define TACLS 0
#define TWRPH0 3
#define TWRPH1 0
+#else
+#define TACLS 0
+#define TWRPH0 4
+#define TWRPH1 2
+#endif
+
NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));
/*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */
/* 1 1 1 1, 1 xxx, r xxx, r xxx */
@@ -177,15 +174,12 @@ void
nand_init(void)
{
S3C2410_NAND * const nand = S3C2410_GetBase_NAND();
- unsigned totlen;
NF_Init();
#ifdef DEBUG
printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
#endif
- totlen = nand_probe((ulong)nand) >> 20;
-
- printf ("%4lu MB\n", totlen >> 20);
+ printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
}
#endif
@@ -193,29 +187,40 @@ nand_init(void)
* Get some Board/PLD Info
*/
-static uchar Get_PLD_ID(void)
+static u8 Get_PLD_ID(void)
+{
+ VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
+
+ return(pld->ID);
+}
+
+static u8 Get_PLD_BOARD(void)
{
- return(*(volatile uchar *)PLD_ID_REG);
+ VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
+
+ return(pld->BOARD);
}
-static uchar Get_PLD_BOARD(void)
+static u8 Get_PLD_SDRAM(void)
{
- return(*(volatile uchar *)PLD_BOARD_REG);
+ VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
+
+ return(pld->SDRAM);
}
-static uchar Get_PLD_Version(void)
+static u8 Get_PLD_Version(void)
{
return((Get_PLD_ID() >> 4) & 0x0F);
}
-static uchar Get_PLD_Revision(void)
+static u8 Get_PLD_Revision(void)
{
return(Get_PLD_ID() & 0x0F);
}
static int Get_Board_Config(void)
{
- uchar config = Get_PLD_BOARD() & 0x03;
+ u8 config = Get_PLD_BOARD() & 0x03;
if (config == 3)
return 1;
@@ -228,6 +233,54 @@ static uchar Get_Board_PCB(void)
return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A');
}
+static u8 Get_SDRAM_ChipNr(void)
+{
+ switch ((Get_PLD_SDRAM() >> 4) & 0x0F) {
+ case 0: return 4;
+ case 1: return 1;
+ case 2: return 2;
+ default: return 0;
+ }
+}
+
+static ulong Get_SDRAM_ChipSize(void)
+{
+ switch (Get_PLD_SDRAM() & 0x0F) {
+ case 0: return 16 * (1024*1024);
+ case 1: return 32 * (1024*1024);
+ case 2: return 8 * (1024*1024);
+ case 3: return 8 * (1024*1024);
+ default: return 0;
+ }
+}
+static const char * Get_SDRAM_ChipGeom(void)
+{
+ switch (Get_PLD_SDRAM() & 0x0F) {
+ case 0: return "4Mx8x4";
+ case 1: return "8Mx8x4";
+ case 2: return "2Mx8x4";
+ case 3: return "4Mx8x2";
+ default: return "unknown";
+ }
+}
+
+static void Show_VCMA9_Info(char *board_name, char *serial)
+{
+ printf("Board: %s SN: %s PCB Rev: %c PLD(%d,%d)\n",
+ board_name, serial, Get_Board_PCB(), Get_PLD_Version(), Get_PLD_Revision());
+ printf("SDRAM: %d chips %s\n", Get_SDRAM_ChipNr(), Get_SDRAM_ChipGeom());
+}
+
+int dram_init(void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+ gd->bd->bi_dram[0].size = Get_SDRAM_ChipSize() * Get_SDRAM_ChipNr();
+
+ return 0;
+}
+
/* ------------------------------------------------------------------------- */
/*
@@ -240,8 +293,6 @@ int checkboard(void)
int i;
backup_t *b = (backup_t *) s;
- puts("Board: ");
-
i = getenv_r("serial#", s, 32);
if ((i < 0) || strncmp (s, "VCMA9", 5)) {
get_backup_values (b);
@@ -249,32 +300,23 @@ int checkboard(void)
puts ("### No HW ID - assuming VCMA9");
} else {
b->serial_name[5] = 0;
- printf ("%s-%d PCB Rev %c SN: %s", b->serial_name, Get_Board_Config(),
- Get_Board_PCB(), &b->serial_name[6]);
+ Show_VCMA9_Info(b->serial_name, &b->serial_name[6]);
}
} else {
s[5] = 0;
- printf ("%s-%d PCB Rev %c SN: %s", s, Get_Board_Config(), Get_Board_PCB(),
- &s[6]);
+ Show_VCMA9_Info(s, &s[6]);
}
- printf("\n");
+ /*printf("\n");*/
return(0);
}
-void print_vcma9_rev(void)
-{
- printf("Board: VCMA9-%d PCB Rev: %c (PLD Ver: %d, Rev: %d)\n",
- Get_Board_Config(), Get_Board_PCB(),
- Get_PLD_Version(), Get_PLD_Revision());
-}
-
extern void mem_test_reloc(void);
int last_stage_init(void)
{
mem_test_reloc();
- print_vcma9_rev();
+ checkboard();
show_stdio_dev();
check_env();
return 0;
@@ -295,6 +337,15 @@ int overwrite_console(void)
* Print VCMA9 Info
************************************************************************/
void print_vcma9_info(void)
-{
- print_vcma9_rev();
+{
+ unsigned char s[50];
+ int i;
+
+ if ((i = getenv_r("serial#", s, 32)) < 0) {
+ puts ("### No HW ID - assuming VCMA9");
+ printf("i %d", i*24);
+ } else {
+ s[5] = 0;
+ Show_VCMA9_Info(s, &s[6]);
+ }
}
diff --git a/board/mpl/vcma9/vcma9.h b/board/mpl/vcma9/vcma9.h
index 068eb212e..c0167d516 100644
--- a/board/mpl/vcma9/vcma9.h
+++ b/board/mpl/vcma9/vcma9.h
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2002
+ * (C) Copyright 2002, 2003
* David Mueller, ELSOFT AG, d.mueller@elsoft.ch
*
* See file CREDITS for list of people who contributed to this
@@ -116,11 +116,19 @@ static inline u32 NF_Read_ECC(void)
#endif
-
-#define PLD_BASE_ADDRESS 0x2C000100
-#define PLD_ID_REG (PLD_BASE_ADDRESS + 0)
-#define PLD_NIC_REG (PLD_BASE_ADDRESS + 1)
-#define PLD_CAN_REG (PLD_BASE_ADDRESS + 2)
-#define PLD_MISC_REG (PLD_BASE_ADDRESS + 3)
-#define PLD_GPCD_REG (PLD_BASE_ADDRESS + 4)
-#define PLD_BOARD_REG (PLD_BASE_ADDRESS + 5)
+/* VCMA9 PLD regsiters */
+typedef struct {
+ S3C24X0_REG8 ID;
+ S3C24X0_REG8 NIC;
+ S3C24X0_REG8 CAN;
+ S3C24X0_REG8 MISC;
+ S3C24X0_REG8 GPCD;
+ S3C24X0_REG8 BOARD;
+ S3C24X0_REG8 SDRAM;
+} /*__attribute__((__packed__))*/ VCMA9_PLD;
+
+#define VCMA9_PLD_BASE 0x2C000100
+static inline VCMA9_PLD * const VCMA9_GetBase_PLD(void)
+{
+ return (VCMA9_PLD * const)VCMA9_PLD_BASE;
+}
diff --git a/cpu/mpc5xxx/Makefile b/cpu/mpc5xxx/Makefile
index 74ec64c5b..a65bc2232 100644
--- a/cpu/mpc5xxx/Makefile
+++ b/cpu/mpc5xxx/Makefile
@@ -27,7 +27,7 @@ LIB = lib$(CPU).a
START = start.o
ASOBJS = io.o firmware_sc_task_bestcomm.impl.o firmware_sc_task.impl.o
-OBJS = traps.o cpu.o cpu_init.o speed.o interrupts.o serial.o \
+OBJS = i2c.o traps.o cpu.o cpu_init.o speed.o interrupts.o serial.o \
loadtask.o fec.o pci_mpc5200.o
all: .depend $(START) $(ASOBJS) $(LIB)
diff --git a/cpu/mpc5xxx/i2c.c b/cpu/mpc5xxx/i2c.c
new file mode 100644
index 000000000..640d14022
--- /dev/null
+++ b/cpu/mpc5xxx/i2c.c
@@ -0,0 +1,338 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_HARD_I2C
+
+#include <mpc5xxx.h>
+#include <i2c.h>
+
+#ifdef CFG_I2C_MODULE
+#define I2C_BASE MPC5XXX_I2C2
+#else
+#define I2C_BASE MPC5XXX_I2C1
+#endif
+
+#define I2C_TIMEOUT 100
+#define I2C_RETRIES 3
+
+static int mpc_reg_in (volatile u32 *reg);
+static void mpc_reg_out (volatile u32 *reg, int val, int mask);
+static int wait_for_bb (void);
+static int wait_for_pin (int *status);
+static int do_address (uchar chip, char rdwr_flag);
+static int send_bytes (uchar chip, char *buf, int len);
+static int receive_bytes (uchar chip, char *buf, int len);
+
+static int mpc_reg_in(volatile u32 *reg)
+{
+ return *reg >> 24;
+ __asm__ __volatile__ ("eieio");
+}
+
+static void mpc_reg_out(volatile u32 *reg, int val, int mask)
+{
+ int tmp;
+
+ if (!mask) {
+ *reg = val << 24;
+ } else {
+ tmp = mpc_reg_in(reg);
+ *reg = ((tmp & ~mask) | (val & mask)) << 24;
+ }
+ __asm__ __volatile__ ("eieio");
+
+ return;
+}
+
+static int wait_for_bb(void)
+{
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int timeout = I2C_TIMEOUT;
+ int status;
+
+ status = mpc_reg_in(&regs->msr);
+
+ while (timeout-- && (status & I2C_BB)) {
+#if 1
+ volatile int temp;
+ mpc_reg_out(&regs->mcr, I2C_STA, I2C_STA);
+ temp = mpc_reg_in(&regs->mdr);
+ mpc_reg_out(&regs->mcr, 0, I2C_STA);
+ mpc_reg_out(&regs->mcr, 0, 0);
+ mpc_reg_out(&regs->mcr, I2C_EN, 0);
+#endif
+ udelay(1000);
+ status = mpc_reg_in(&regs->msr);
+ }
+
+ return (status & I2C_BB);
+}
+
+static int wait_for_pin(int *status)
+{
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int timeout = I2C_TIMEOUT;
+
+ *status = mpc_reg_in(&regs->msr);
+
+ while (timeout-- && !(*status & I2C_IF)) {
+ udelay(1000);
+ *status = mpc_reg_in(&regs->msr);
+ }
+
+ if (!(*status & I2C_IF)) {
+ return -1;
+ }
+
+ mpc_reg_out(&regs->msr, 0, I2C_IF);
+
+ return 0;
+}
+
+static int do_address(uchar chip, char rdwr_flag)
+{
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int status;
+
+ chip <<= 1;
+
+ if (rdwr_flag) {
+ chip |= 1;
+ }
+
+ mpc_reg_out(&regs->mcr, I2C_TX, I2C_TX);
+ mpc_reg_out(&regs->mdr, chip, 0);
+
+ if (wait_for_pin(&status)) {
+ return -2;
+ }
+
+ if (status & I2C_RXAK) {
+ return -3;
+ }
+
+ return 0;
+}
+
+static int send_bytes(uchar chip, char *buf, int len)
+{
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int wrcount;
+ int status;
+
+ for (wrcount = 0; wrcount < len; ++wrcount) {
+
+ mpc_reg_out(&regs->mdr, buf[wrcount], 0);
+
+ if (wait_for_pin(&status)) {
+ break;
+ }
+
+ if (status & I2C_RXAK) {
+ break;
+ }
+
+ }
+
+ return !(wrcount == len);
+}
+
+static int receive_bytes(uchar chip, char *buf, int len)
+{
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int dummy = 1;
+ int rdcount = 0;
+ int status;
+ int i;
+
+ mpc_reg_out(&regs->mcr, 0, I2C_TX);
+
+ for (i = 0; i < len; ++i) {
+ buf[rdcount] = mpc_reg_in(&regs->mdr);
+
+ if (dummy) {
+ dummy = 0;
+ } else {
+ rdcount++;
+ }
+
+
+ if (wait_for_pin(&status)) {
+ return -4;
+ }
+ }
+
+ mpc_reg_out(&regs->mcr, I2C_TXAK, I2C_TXAK);
+ buf[rdcount++] = mpc_reg_in(&regs->mdr);
+
+ if (wait_for_pin(&status)) {
+ return -5;
+ }
+
+ mpc_reg_out(&regs->mcr, 0, I2C_TXAK);
+
+ return 0;
+}
+
+/**************** I2C API ****************/
+
+void i2c_init(int speed, int saddr)
+{
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+
+ mpc_reg_out(&regs->mcr, 0, 0);
+ mpc_reg_out(&regs->madr, saddr << 1, 0);
+
+ /* Set clock
+ */
+ mpc_reg_out(&regs->mfdr, speed, 0);
+
+ /* Enable module
+ */
+ mpc_reg_out(&regs->mcr, I2C_EN, I2C_INIT_MASK);
+ mpc_reg_out(&regs->msr, 0, I2C_IF);
+
+ return;
+}
+
+int i2c_probe(uchar chip)
+{
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int i;
+
+ for (i = 0; i < I2C_RETRIES; i++) {
+ mpc_reg_out(&regs->mcr, I2C_STA, I2C_STA);
+
+ if (! do_address(chip, 0)) {
+ mpc_reg_out(&regs->mcr, 0, I2C_STA);
+ break;
+ }
+
+ mpc_reg_out(&regs->mcr, 0, I2C_STA);
+ udelay(500);
+ }
+
+ return (i == I2C_RETRIES);
+}
+
+int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
+{
+ uchar xaddr[4];
+ struct mpc5xxx_i2c * regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int ret = -1;
+
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+
+ if (wait_for_bb()) {
+ printf("i2c_read: bus is busy\n");
+ goto Done;
+ }
+
+ mpc_reg_out(&regs->mcr, I2C_STA, I2C_STA);
+ if (do_address(chip, 0)) {
+ printf("i2c_read: failed to address chip\n");
+ goto Done;
+ }
+
+ if (send_bytes(chip, &xaddr[4-alen], alen)) {
+ printf("i2c_read: send_bytes failed\n");
+ goto Done;
+ }
+
+ mpc_reg_out(&regs->mcr, I2C_RSTA, I2C_RSTA);
+ if (do_address(chip, 1)) {
+ printf("i2c_read: failed to address chip\n");
+ goto Done;
+ }
+
+ if (receive_bytes(chip, buf, len)) {
+ printf("i2c_read: receive_bytes failed\n");
+ goto Done;
+ }
+
+ ret = 0;
+Done:
+ mpc_reg_out(&regs->mcr, 0, I2C_STA);
+ return ret;
+}
+
+int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
+{
+ uchar xaddr[4];
+ struct mpc5xxx_i2c *regs = (struct mpc5xxx_i2c *)I2C_BASE;
+ int ret = -1;
+
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+
+ if (wait_for_bb()) {
+ printf("i2c_write: bus is busy\n");
+ goto Done;
+ }
+
+ mpc_reg_out(&regs->mcr, I2C_STA, I2C_STA);
+ if (do_address(chip, 0)) {
+ printf("i2c_write: failed to address chip\n");
+ goto Done;
+ }
+
+ if (send_bytes(chip, &xaddr[4-alen], alen)) {
+ printf("i2c_write: send_bytes failed\n");
+ goto Done;
+ }
+
+ if (send_bytes(chip, buf, len)) {
+ printf("i2c_write: send_bytes failed\n");
+ goto Done;
+ }
+
+ ret = 0;
+Done:
+ mpc_reg_out(&regs->mcr, 0, I2C_STA);
+ return ret;
+}
+
+uchar i2c_reg_read(uchar chip, uchar reg)
+{
+ char buf;
+
+ i2c_read(chip, reg, 1, &buf, 1);
+
+ return buf;
+}
+
+void i2c_reg_write(uchar chip, uchar reg, uchar val)
+{
+ i2c_write(chip, reg, 1, &val, 1);
+
+ return;
+}
+
+#endif /* CONFIG_HARD_I2C */
diff --git a/include/configs/IceCube.h b/include/configs/IceCube.h
index 9d914a6bb..c2c398c75 100644
--- a/include/configs/IceCube.h
+++ b/include/configs/IceCube.h
@@ -83,7 +83,8 @@
/*
* Supported commands
*/
-#define CONFIG_COMMANDS (CONFIG_CMD_DFL | ADD_PCI_CMD)
+#define CONFIG_COMMANDS (CONFIG_CMD_DFL | ADD_PCI_CMD | \
+ CFG_CMD_I2C | CFG_CMD_EEPROM)
/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
#include <cmd_confdefs.h>
@@ -98,6 +99,23 @@
/*
* I2C configuration
*/
+#define CONFIG_HARD_I2C 1 /* I2C with hardware support */
+#define CFG_I2C_MODULE 1 /* If defined then I2C module #2 is used
+ * otherwise I2C module #1 is used */
+#ifdef CONFIG_MPC5200
+#define CFG_I2C_SPEED 0x3D /* 86KHz given 133MHz IPBI */
+#else
+#define CFG_I2C_SPEED 0x35 /* 86KHz given 33MHz IPBI */
+#endif
+#define CFG_I2C_SLAVE 0x7F
+
+/*
+ * EEPROM configuration
+ */
+#define CFG_I2C_EEPROM_ADDR 0x50 /* 1010000x */
+#define CFG_I2C_EEPROM_ADDR_LEN 1
+#define CFG_EEPROM_PAGE_WRITE_BITS 3
+#define CFG_EEPROM_PAGE_WRITE_DELAY_MS 35
/*
* Flash configuration
diff --git a/include/configs/VCMA9.h b/include/configs/VCMA9.h
index c0103fc33..9f868f8c8 100644
--- a/include/configs/VCMA9.h
+++ b/include/configs/VCMA9.h
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2002
+ * (C) Copyright 2002, 2003
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
* Gary Jennejohn <gj@denx.de>
@@ -160,9 +160,10 @@
#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_MEMTEST_START 0x30000000 /* memtest works on */
-#define CFG_MEMTEST_END 0x33F80000 /* 63.5 MB in DRAM */
+#define CFG_MEMTEST_END 0x30F80000 /* 15.5 MB in DRAM */
+
#define CFG_ALT_MEMTEST
-#define CFG_LOAD_ADDR 0x33000000 /* default load address */
+#define CFG_LOAD_ADDR 0x30800000 /* default load address */
#undef CFG_CLKS_IN_HZ /* everything, incl board info, in Hz */
@@ -197,8 +198,6 @@
*/
#define CONFIG_NR_DRAM_BANKS 1 /* we have 1 bank of DRAM */
#define PHYS_SDRAM_1 0x30000000 /* SDRAM Bank #1 */
-#define PHYS_SDRAM_1_SIZE 0x04000000 /* 64 MB */
-
#define PHYS_FLASH_1 0x00000000 /* Flash Bank #1 */
#define CFG_FLASH_BASE PHYS_FLASH_1
diff --git a/include/mpc5xxx.h b/include/mpc5xxx.h
index 02683e382..b38d7d4a0 100644
--- a/include/mpc5xxx.h
+++ b/include/mpc5xxx.h
@@ -108,6 +108,9 @@
#define MPC5XXX_FEC (CFG_MBAR + 0x3000)
+#define MPC5XXX_I2C1 (CFG_MBAR + 0x3D00)
+#define MPC5XXX_I2C2 (CFG_MBAR + 0x3D40)
+
#if defined(CONFIG_MGT5100)
#define MPC5XXX_SRAM (CFG_MBAR + 0x4000)
#define MPC5XXX_SRAM_SIZE (8*1024)
@@ -197,6 +200,24 @@
#define MPC5XXX_GPT0_ENABLE (MPC5XXX_GPT + 0x0)
#define MPC5XXX_GPT0_COUNTER (MPC5XXX_GPT + 0x4)
+/* I2Cn control register bits */
+#define I2C_EN 0x80
+#define I2C_IEN 0x40
+#define I2C_STA 0x20
+#define I2C_TX 0x10
+#define I2C_TXAK 0x08
+#define I2C_RSTA 0x04
+#define I2C_INIT_MASK (I2C_EN | I2C_STA | I2C_TX | I2C_RSTA)
+
+/* I2Cn status register bits */
+#define I2C_CF 0x80
+#define I2C_AAS 0x40
+#define I2C_BB 0x20
+#define I2C_AL 0x10
+#define I2C_SRW 0x04
+#define I2C_IF 0x02
+#define I2C_RXAK 0x01
+
/* Programmable Serial Controller (PSC) status register bits */
#define PSC_SR_CDE 0x0080
#define PSC_SR_RXRDY 0x0100
@@ -505,6 +526,14 @@ struct mpc5xxx_sdma {
volatile u32 EU37; /* SDMA + 0xfc */
};
+struct mpc5xxx_i2c {
+ volatile u32 madr; /* I2Cn + 0x00 */
+ volatile u32 mfdr; /* I2Cn + 0x04 */
+ volatile u32 mcr; /* I2Cn + 0x08 */
+ volatile u32 msr; /* I2Cn + 0x0C */
+ volatile u32 mdr; /* I2Cn + 0x10 */
+};
+
/* function prototypes */
void loadtask(int basetask, int tasks);
diff --git a/rtc/s3c24x0_rtc.c b/rtc/s3c24x0_rtc.c
index bf8008d8d..9e2191e87 100644
--- a/rtc/s3c24x0_rtc.c
+++ b/rtc/s3c24x0_rtc.c
@@ -80,13 +80,15 @@ void rtc_get (struct rtc_time *tmp)
SetRTC_Access(RTC_ENABLE);
/* read RTC registers */
- sec = rtc->BCDSEC;
- min = rtc->BCDMIN;
- hour = rtc->BCDHOUR;
- mday = rtc->BCDDATE;
- wday = rtc->BCDDAY;
- mon = rtc->BCDMON;
- year = rtc->BCDYEAR;
+ do {
+ sec = rtc->BCDSEC;
+ min = rtc->BCDMIN;
+ hour = rtc->BCDHOUR;
+ mday = rtc->BCDDATE;
+ wday = rtc->BCDDAY;
+ mon = rtc->BCDMON;
+ year = rtc->BCDYEAR;
+ } while (sec != rtc->BCDSEC);
/* read ALARM registers */
a_sec = rtc->ALMSEC;
@@ -170,7 +172,7 @@ void rtc_reset (void)
S3C24X0_RTC * const rtc = S3C24X0_GetBase_RTC();
rtc->RTCCON = (rtc->RTCCON & ~0x06) | 0x08;
- rtc->RTCCON &= ~0x08;
+ rtc->RTCCON &= ~(0x08|0x01);
}
/* ------------------------------------------------------------------------- */