3 files changed, 206 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/board/canmb/Makefile b/qemu/roms/u-boot/board/canmb/Makefile
new file mode 100644
index 000000000..4286a9123
--- /dev/null
+++ b/qemu/roms/u-boot/board/canmb/Makefile
@@ -0,0 +1,9 @@
+#
+# (C) Copyright 2005-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= canmb.o
+
diff --git a/qemu/roms/u-boot/board/canmb/canmb.c b/qemu/roms/u-boot/board/canmb/canmb.c
new file mode 100644
index 000000000..15c934d29
--- /dev/null
+++ b/qemu/roms/u-boot/board/canmb/canmb.c
@@ -0,0 +1,183 @@
+/*
+ * (C) Copyright 2005
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <mpc5xxx.h>
+#include <pci.h>
+
+#if defined(CONFIG_MPC5200_DDR)
+#include "mt46v16m16-75.h"
+#else
+#include "mt48lc16m32s2-75.h"
+#endif
+
+#ifndef CONFIG_SYS_RAMBOOT
+static void sdram_start (int hi_addr)
+{
+	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+
+	/* unlock mode register */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
+	__asm__ volatile ("sync");
+
+	/* precharge all banks */
+	*(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 = SDRAM_EMODE;
+	__asm__ volatile ("sync");
+
+	/* set mode register: reset DLL */
+	*(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 = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
+	__asm__ volatile ("sync");
+
+	/* set mode register */
+	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
+	__asm__ volatile ("sync");
+
+	/* normal operation */
+	*(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 CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
+ *            is something else than 0x00000000.
+ */
+
+phys_size_t initdram (int board_type)
+{
+	ulong dramsize = 0;
+	ulong dramsize2 = 0;
+#ifndef CONFIG_SYS_RAMBOOT
+	ulong test1, test2;
+
+	/* setup SDRAM chip selects */
+	*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
+	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
+	__asm__ volatile ("sync");
+
+	/* setup config registers */
+	*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
+	*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
+	__asm__ volatile ("sync");
+
+#if SDRAM_DDR
+	/* set tap delay */
+	*(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
+	__asm__ volatile ("sync");
+#endif
+
+	/* find RAM size using SDRAM CS0 only */
+	sdram_start(0);
+	test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
+	sdram_start(1);
+	test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
+	if (test1 > test2) {
+		sdram_start(0);
+		dramsize = test1;
+	} else {
+		dramsize = test2;
+	}
+
+	/* 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 */
+	if (!dramsize)
+		sdram_start(0);
+	test2 = test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
+	if (!dramsize) {
+		sdram_start(1);
+		test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
+	}
+	if (test1 > test2) {
+		sdram_start(0);
+		dramsize2 = test1;
+	} else {
+		dramsize2 = test2;
+	}
+
+	/* 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 /* CONFIG_SYS_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 /* CONFIG_SYS_RAMBOOT */
+
+	return dramsize + dramsize2;
+}
+
+int checkboard (void)
+{
+	puts ("Board: CANMB\n");
+	return 0;
+}
+
+int board_early_init_r (void)
+{
+	*(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
+	*(vu_long *)MPC5XXX_BOOTCS_START =
+	*(vu_long *)MPC5XXX_CS0_START = START_REG(CONFIG_SYS_FLASH_BASE);
+	*(vu_long *)MPC5XXX_BOOTCS_STOP =
+	*(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_SIZE);
+	return 0;
+}
diff --git a/qemu/roms/u-boot/board/canmb/mt48lc16m32s2-75.h b/qemu/roms/u-boot/board/canmb/mt48lc16m32s2-75.h
new file mode 100644
index 000000000..0133eaa2c
--- /dev/null
+++ b/qemu/roms/u-boot/board/canmb/mt48lc16m32s2-75.h
@@ -0,0 +1,14 @@
+/*
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#define SDRAM_DDR	0		/* is SDR */
+
+/* Settings for XLB = 132 MHz */
+#define SDRAM_MODE	0x00CD0000
+#define SDRAM_CONTROL	0x504F0000
+#define SDRAM_CONFIG1	0xD2322800
+#define SDRAM_CONFIG2	0x8AD70000