board support patch for phyCORE-MPC5200B-tiny

Add support for the Phytec phyCORE-MPC5200B-tiny.
Code originally from Pengutronix.de.
Created CONFIG_SYS_ATA_CS_ON_TIMER01 define for when IDE CS is on
Timer 0/1

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 220 insertions, 0 deletions

diff --git a/board/phytec/pcm030/pcm030.c b/board/phytec/pcm030/pcm030.c
new file mode 100644
index 0000000..6a93874
--- /dev/null
+++ b/board/phytec/pcm030/pcm030.c
@@ -0,0 +1,220 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * (C) Copyright 2006
+ * Eric Schumann, Phytec Messtechnik GmbH
+ *
+ * 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>
+#include <mpc5xxx.h>
+#include <pci.h>
+#include <asm-ppc/io.h>
+
+#include "mt46v32m16-75.h"
+
+#ifndef CONFIG_SYS_RAMBOOT
+static void sdram_start(int hi_addr)
+{
+	volatile struct mpc5xxx_cdm *cdm =
+		(struct mpc5xxx_cdm *)MPC5XXX_CDM;
+	volatile struct mpc5xxx_sdram *sdram =
+		(struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
+
+	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+
+	/* unlock mode register */
+	out_be32 (&sdram->ctrl,
+		(SDRAM_CONTROL | 0x80000000 | hi_addr_bit));
+
+	/* precharge all banks */
+	out_be32 (&sdram->ctrl,
+		(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
+
+#ifdef SDRAM_DDR
+	/* set mode register: extended mode */
+	out_be32 (&sdram->mode, (SDRAM_EMODE));
+
+	/* set mode register: reset DLL */
+	out_be32 (&sdram->mode,
+		(SDRAM_MODE | 0x04000000));
+#endif
+
+	/* precharge all banks */
+	out_be32 (&sdram->ctrl,
+		(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
+
+	/* auto refresh */
+	out_be32 (&sdram->ctrl,
+		(SDRAM_CONTROL | 0x80000004 | hi_addr_bit));
+
+	/* set mode register */
+	out_be32 (&sdram->mode, (SDRAM_MODE));
+
+	/* normal operation */
+	out_be32 (&sdram->ctrl,
+		(SDRAM_CONTROL | hi_addr_bit));
+
+	/* set CDM clock enable register, set MPC5200B SDRAM bus */
+	/* to reduced driver strength */
+	out_be32 (&cdm->clock_enable, (0x00CFFFFF));
+}
+#endif
+
+/*
+ * ATTENTION: Although partially referenced initdram does NOT make
+ *	real 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)
+{
+	volatile struct mpc5xxx_mmap_ctl *mm =
+		(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
+	volatile struct mpc5xxx_cdm *cdm =
+		(struct mpc5xxx_cdm *)MPC5XXX_CDM;
+	volatile struct mpc5xxx_sdram *sdram =
+		(struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
+	ulong dramsize = 0;
+	ulong dramsize2 = 0;
+#ifndef CONFIG_SYS_RAMBOOT
+	ulong test1, test2;
+
+	/* setup SDRAM chip selects */
+							 /* 256MB at 0x0 */
+	out_be32 (&mm->sdram0, 0x0000001b);
+							 /* disabled */
+	out_be32 (&mm->sdram1, 0x10000000);
+
+	/* setup config registers */
+	out_be32 (&sdram->config1, SDRAM_CONFIG1);
+	out_be32 (&sdram->config2, SDRAM_CONFIG2);
+
+#if defined(SDRAM_DDR) && defined(SDRAM_TAPDELAY)
+	/* set tap delay */
+	out_be32 (&cdm->porcfg, SDRAM_TAPDELAY);
+#endif
+
+	/* find RAM size using SDRAM CS0 only */
+	sdram_start(0);
+	test1 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x10000000);
+	sdram_start(1);
+	test2 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x10000000);
+	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) {
+		out_be32 (&mm->sdram0,
+			(0x13 + __builtin_ffs(dramsize >> 20) - 1));
+	} else {
+							/* disabled */
+		out_be32 (&mm->sdram0, 0);
+	}
+
+#else /* CONFIG_SYS_RAMBOOT */
+
+	/* retrieve size of memory connected to SDRAM CS0 */
+	dramsize = in_be32(&mm->sdram0) & 0xFF;
+	if (dramsize >= 0x13)
+		dramsize = (1 << (dramsize - 0x13)) << 20;
+	else
+		dramsize = 0;
+
+	/* retrieve size of memory connected to SDRAM CS1 */
+	dramsize2 = in_be32(&mm->sdram1) & 0xFF;
+	if (dramsize2 >= 0x13)
+		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
+	else
+		dramsize2 = 0;
+
+#endif /* CONFIG_SYS_RAMBOOT */
+
+	return dramsize + dramsize2;
+}
+
+int checkboard(void)
+{
+	puts("Board: phyCORE-MPC5200B-tiny\n");
+	return 0;
+}
+
+#ifdef CONFIG_PCI
+static struct pci_controller hose;
+
+extern void pci_mpc5xxx_init(struct pci_controller *);
+
+void pci_init_board(void)
+{
+	pci_mpc5xxx_init(&hose);
+}
+#endif
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t * bd)
+{
+	ft_cpu_setup(blob, bd);
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
+
+#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
+
+#define GPIO_PSC2_4	0x02000000UL
+
+void init_ide_reset(void)
+{
+	volatile struct mpc5xxx_wu_gpio *wu_gpio =
+		(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
+	debug("init_ide_reset\n");
+
+	/* Configure PSC2_4 as GPIO output for ATA reset */
+	setbits_be32(&wu_gpio->enable, GPIO_PSC2_4);
+	setbits_be32(&wu_gpio->ddr, GPIO_PSC2_4);
+	/* Deassert reset */
+	setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
+}
+
+void ide_set_reset(int idereset)
+{
+	volatile struct mpc5xxx_wu_gpio *wu_gpio =
+		(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
+	debug("ide_reset(%d)\n", idereset);
+
+	if (idereset) {
+		clrbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
+		/* Make a delay. MPC5200 spec says 25 usec min */
+		udelay(500000);
+	} else
+		setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
+}
+#endif /* defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) */
+