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-rw-r--r--board/icecube/icecube.c226
-rw-r--r--board/icecube/mt46v16m16-75.h37
-rw-r--r--board/icecube/mt48lc16m16a2-75.h43
3 files changed, 228 insertions, 78 deletions
diff --git a/board/icecube/icecube.c b/board/icecube/icecube.c
index e40bcdf..5a206c0 100644
--- a/board/icecube/icecube.c
+++ b/board/icecube/icecube.c
@@ -2,6 +2,9 @@
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
@@ -25,90 +28,84 @@
#include <mpc5xxx.h>
#include <pci.h>
+#if defined(CONFIG_MPC5200_DDR)
+#include "mt46v16m16-75.h"
+#else
+#include "mt48lc16m16a2-75.h"
+#endif
+
#ifndef CFG_RAMBOOT
static void sdram_start (int hi_addr)
{
long hi_addr_bit = hi_addr ? 0x01000000 : 0;
-#ifdef CONFIG_MPC5200_DDR
/* unlock mode register */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f00 | hi_addr_bit;
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
+ __asm__ volatile ("sync");
+
/* precharge all banks */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f02 | hi_addr_bit;
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
+ __asm__ volatile ("sync");
+
+#if SDRAM_DDR
/* set mode register: extended mode */
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x40090000;
+ *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
+ __asm__ volatile ("sync");
+
/* set mode register: reset DLL */
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x058d0000;
- /* precharge all banks */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f02 | hi_addr_bit;
- /* auto refresh */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f04 | hi_addr_bit;
- /* set mode register */
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x018d0000;
- /* normal operation */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0x705f0f00 | hi_addr_bit;
-#else
- /* unlock mode register */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0000 | hi_addr_bit;
- /* precharge all banks */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0002 | hi_addr_bit;
- /* set mode register */
-#if defined(CONFIG_MPC5200)
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x00cd0000;
-#elif defined(CONFIG_MGT5100)
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x008d0000;
+ *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
+ __asm__ volatile ("sync");
#endif
+
+ /* precharge all banks */
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
+ __asm__ volatile ("sync");
+
/* auto refresh */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0004 | hi_addr_bit;
- /* auto refresh */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0004 | hi_addr_bit;
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
+ __asm__ volatile ("sync");
+
/* set mode register */
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x00cd0000;
+ *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
+ __asm__ volatile ("sync");
+
/* normal operation */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0x504f0000 | hi_addr_bit;
-#endif
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
+ __asm__ volatile ("sync");
}
#endif
+/*
+ * ATTENTION: Although partially referenced initdram does NOT make real use
+ * use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
+ * is something else than 0x00000000.
+ */
+
+#if defined(CONFIG_MPC5200)
long int initdram (int board_type)
{
ulong dramsize = 0;
-#ifdef CONFIG_MPC5200_DDR
ulong dramsize2 = 0;
-#endif
#ifndef CFG_RAMBOOT
ulong test1, test2;
-
- /* configure SDRAM start/end */
-#if defined(CONFIG_MPC5200)
+
+ /* setup SDRAM chip selects */
*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
+ __asm__ volatile ("sync");
-#ifdef CONFIG_MPC5200_DDR
/* setup config registers */
- *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0x73722930;
- *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x47770000;
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
+ __asm__ volatile ("sync");
- /* set tap delay to 0x10 */
- *(vu_long *)MPC5XXX_CDM_PORCFG = 0x10000000;
-#else
- /* setup config registers */
- *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0xd2322800;
- *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x8ad70000;
+#if SDRAM_DDR
+ /* set tap delay */
+ *(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
+ __asm__ volatile ("sync");
#endif
-#elif defined(CONFIG_MGT5100)
- *(vu_long *)MPC5XXX_SDRAM_START = 0x00000000;
- *(vu_long *)MPC5XXX_SDRAM_STOP = 0x0000ffff;/* 2G */
- *(vu_long *)MPC5XXX_ADDECR |= (1 << 22); /* Enable SDRAM */
-
- /* setup config registers */
- *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0xc2222600;
- *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x88b70004;
-
- /* address select register */
- *(vu_long *)MPC5XXX_SDRAM_XLBSEL = 0x03000000;
-#endif
+ /* find RAM size using SDRAM CS0 only */
sdram_start(0);
test1 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000);
sdram_start(1);
@@ -119,11 +116,24 @@ long int initdram (int board_type)
} else {
dramsize = test2;
}
-#if defined(CONFIG_MPC5200)
- *(vu_long *)MPC5XXX_SDRAM_CS0CFG =
- (0x13 + __builtin_ffs(dramsize >> 20) - 1);
-#ifdef CONFIG_MPC5200_DDR
+
+ /* memory smaller than 1MB is impossible */
+ if (dramsize < (1 << 20)) {
+ dramsize = 0;
+ }
+
+ /* set SDRAM CS0 size according to the amount of RAM found */
+ if (dramsize > 0) {
+ *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1;
+ } else {
+ *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
+ }
+
+
+ /* let SDRAM CS1 start right after CS0 */
*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
+
+ /* find RAM size using SDRAM CS1 only */
sdram_start(0);
test1 = get_ram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
sdram_start(1);
@@ -134,34 +144,94 @@ long int initdram (int board_type)
} else {
dramsize2 = test2;
}
- *(vu_long *)MPC5XXX_SDRAM_CS1CFG =
- dramsize + (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
-#else
- *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
-#endif
+
+ /* memory smaller than 1MB is impossible */
+ if (dramsize2 < (1 << 20)) {
+ dramsize2 = 0;
+ }
+
+ /* set SDRAM CS1 size according to the amount of RAM found */
+ if (dramsize2 > 0) {
+ *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
+ | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
+ } else {
+ *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
+ }
+
+#else /* CFG_RAMBOOT */
+
+ /* retrieve size of memory connected to SDRAM CS0 */
+ dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
+ if (dramsize >= 0x13) {
+ dramsize = (1 << (dramsize - 0x13)) << 20;
+ } else {
+ dramsize = 0;
+ }
+
+ /* retrieve size of memory connected to SDRAM CS1 */
+ dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
+ if (dramsize2 >= 0x13) {
+ dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
+ } else {
+ dramsize2 = 0;
+ }
+
+#endif /* CFG_RAMBOOT */
+
+ return dramsize + dramsize2;
+}
+
#elif defined(CONFIG_MGT5100)
- *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15);
-#endif
-#else /* CFG_RAMBOOT */
-#ifdef CONFIG_MGT5100
+long int initdram (int board_type)
+{
+ ulong dramsize = 0;
+#ifndef CFG_RAMBOOT
+ ulong test1, test2;
+
+ /* setup and enable SDRAM chip selects */
+ *(vu_long *)MPC5XXX_SDRAM_START = 0x00000000;
+ *(vu_long *)MPC5XXX_SDRAM_STOP = 0x0000ffff;/* 2G */
*(vu_long *)MPC5XXX_ADDECR |= (1 << 22); /* Enable SDRAM */
+ __asm__ volatile ("sync");
+
+ /* setup config registers */
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
+
+ /* address select register */
+ *(vu_long *)MPC5XXX_SDRAM_XLBSEL = SDRAM_ADDRSEL;
+ __asm__ volatile ("sync");
+
+ /* find RAM size */
+ sdram_start(0);
+ test1 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000);
+ sdram_start(1);
+ test2 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000);
+ if (test1 > test2) {
+ sdram_start(0);
+ dramsize = test1;
+ } else {
+ dramsize = test2;
+ }
+
+ /* set SDRAM end address according to size */
+ *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15);
+
+#else /* CFG_RAMBOOT */
+
+ /* Retrieve amount of SDRAM available */
dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15);
-#else
- dramsize = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS0CFG - 0x13)) << 20);
-#ifdef CONFIG_MPC5200_DDR
- dramsize2 = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS1CFG - 0x13)) << 20);
-#endif
-#endif
+
#endif /* CFG_RAMBOOT */
-#ifdef CONFIG_MPC5200_DDR
- dramsize += dramsize2;
-#endif
- /* return total ram size */
return dramsize;
}
+#else
+#error Neither CONFIG_MPC5200 or CONFIG_MGT5100 defined
+#endif
+
int checkboard (void)
{
#if defined(CONFIG_MPC5200)
diff --git a/board/icecube/mt46v16m16-75.h b/board/icecube/mt46v16m16-75.h
new file mode 100644
index 0000000..4c0f9a7
--- /dev/null
+++ b/board/icecube/mt46v16m16-75.h
@@ -0,0 +1,37 @@
+/*
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * 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
+ */
+
+#define SDRAM_DDR 1 /* is DDR */
+
+#if defined(CONFIG_MPC5200)
+/* Settings for XLB = 132 MHz */
+#define SDRAM_MODE 0x018D0000
+#define SDRAM_EMODE 0x40090000
+#define SDRAM_CONTROL 0x705f0f00
+#define SDRAM_CONFIG1 0x73722930
+#define SDRAM_CONFIG2 0x47770000
+#define SDRAM_TAPDELAY 0x10000000
+
+#else
+#error CONFIG_MPC5200 not defined
+#endif
diff --git a/board/icecube/mt48lc16m16a2-75.h b/board/icecube/mt48lc16m16a2-75.h
new file mode 100644
index 0000000..ffdf039
--- /dev/null
+++ b/board/icecube/mt48lc16m16a2-75.h
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * 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
+ */
+
+#define SDRAM_DDR 0 /* is SDR */
+
+#if defined(CONFIG_MPC5200)
+/* Settings for XLB = 132 MHz */
+#define SDRAM_MODE 0x00CD0000
+#define SDRAM_CONTROL 0x504F0000
+#define SDRAM_CONFIG1 0xD2322800
+#define SDRAM_CONFIG2 0x8AD70000
+
+#elif defined(CONFIG_MGT5100)
+/* Settings for XLB = 66 MHz */
+#define SDRAM_MODE 0x008D0000
+#define SDRAM_CONTROL 0x504F0000
+#define SDRAM_CONFIG1 0xC2222600
+#define SDRAM_CONFIG2 0x88B70004
+#define SDRAM_ADDRSEL 0x02000000
+
+#else
+#error Neither CONFIG_MPC5200 or CONFIG_MGT5100 defined
+#endif
generated by cgit v1.1 at 2024-11-24 07:37:17 +0000