[PATCH] ppc32: add support for Marvell EV64360BP board

This patch adds support for Marvell EV64360BP board.  So far, it supports
mpsc serial console, gigabit ethernet, jffs2 root filesystem, etc.  Other
device support, like watchdog, RTC, will be added later.

Signed-off-by: Lee Nicks <allinux@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 510 insertions, 0 deletions

diff --git a/arch/ppc/platforms/ev64360.c b/arch/ppc/platforms/ev64360.c
new file mode 100644
index 00000000000..9811a8a52c2
--- /dev/null
+++ b/arch/ppc/platforms/ev64360.c
@@ -0,0 +1,510 @@
+/*
+ * arch/ppc/platforms/ev64360.c
+ *
+ * Board setup routines for the Marvell EV-64360-BP Evaluation Board.
+ *
+ * Author: Lee Nicks <allinux@gmail.com>
+ *
+ * Based on code done by Rabeeh Khoury - rabeeh@galileo.co.il
+ * Based on code done by - Mark A. Greer <mgreer@mvista.com>
+ *
+ * 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.
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/console.h>
+#include <linux/initrd.h>
+#include <linux/root_dev.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/bootmem.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mv643xx.h>
+#ifdef CONFIG_BOOTIMG
+#include <linux/bootimg.h>
+#endif
+#include <asm/page.h>
+#include <asm/time.h>
+#include <asm/smp.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+#include <asm/ppcboot.h>
+#include <asm/mv64x60.h>
+#include <platforms/ev64360.h>
+
+#define BOARD_VENDOR    "Marvell"
+#define BOARD_MACHINE   "EV-64360-BP"
+
+static struct		mv64x60_handle bh;
+static void __iomem	*sram_base;
+
+static u32		ev64360_flash_size_0;
+static u32		ev64360_flash_size_1;
+
+static u32		ev64360_bus_frequency;
+
+unsigned char	__res[sizeof(bd_t)];
+
+static int __init
+ev64360_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	return 0;
+}
+
+static void __init
+ev64360_setup_bridge(void)
+{
+	struct mv64x60_setup_info si;
+	int i;
+
+	memset(&si, 0, sizeof(si));
+
+	si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
+
+	#ifdef CONFIG_PCI
+	si.pci_1.enable_bus = 1;
+	si.pci_1.pci_io.cpu_base = EV64360_PCI1_IO_START_PROC_ADDR;
+	si.pci_1.pci_io.pci_base_hi = 0;
+	si.pci_1.pci_io.pci_base_lo = EV64360_PCI1_IO_START_PCI_ADDR;
+	si.pci_1.pci_io.size = EV64360_PCI1_IO_SIZE;
+	si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
+	si.pci_1.pci_mem[0].cpu_base = EV64360_PCI1_MEM_START_PROC_ADDR;
+	si.pci_1.pci_mem[0].pci_base_hi = EV64360_PCI1_MEM_START_PCI_HI_ADDR;
+	si.pci_1.pci_mem[0].pci_base_lo = EV64360_PCI1_MEM_START_PCI_LO_ADDR;
+	si.pci_1.pci_mem[0].size = EV64360_PCI1_MEM_SIZE;
+	si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
+	si.pci_1.pci_cmd_bits = 0;
+	si.pci_1.latency_timer = 0x80;
+	#else
+	si.pci_0.enable_bus = 0;
+	si.pci_1.enable_bus = 0;
+	#endif
+
+	for (i = 0; i < MV64x60_CPU2MEM_WINDOWS; i++) {
+#if defined(CONFIG_NOT_COHERENT_CACHE)
+		si.cpu_prot_options[i] = 0;
+		si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE;
+		si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE;
+		si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE;
+
+		si.pci_1.acc_cntl_options[i] =
+		    MV64360_PCI_ACC_CNTL_SNOOP_NONE |
+		    MV64360_PCI_ACC_CNTL_SWAP_NONE |
+		    MV64360_PCI_ACC_CNTL_MBURST_128_BYTES |
+		    MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
+#else
+		si.cpu_prot_options[i] = 0;
+		si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE; /* errata */
+		si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE; /* errata */
+		si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE; /* errata */
+
+		si.pci_1.acc_cntl_options[i] =
+		    MV64360_PCI_ACC_CNTL_SNOOP_WB |
+		    MV64360_PCI_ACC_CNTL_SWAP_NONE |
+		    MV64360_PCI_ACC_CNTL_MBURST_32_BYTES |
+		    MV64360_PCI_ACC_CNTL_RDSIZE_32_BYTES;
+#endif
+	}
+
+	if (mv64x60_init(&bh, &si))
+		printk(KERN_WARNING "Bridge initialization failed.\n");
+
+	#ifdef CONFIG_PCI
+	pci_dram_offset = 0; /* sys mem at same addr on PCI & cpu bus */
+	ppc_md.pci_swizzle = common_swizzle;
+	ppc_md.pci_map_irq = ev64360_map_irq;
+	ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;
+
+	mv64x60_set_bus(&bh, 1, 0);
+	bh.hose_b->first_busno = 0;
+	bh.hose_b->last_busno = 0xff;
+	#endif
+}
+
+/* Bridge & platform setup routines */
+void __init
+ev64360_intr_setup(void)
+{
+	/* MPP 8, 9, and 10 */
+	mv64x60_clr_bits(&bh, MV64x60_MPP_CNTL_1, 0xfff);
+
+	/*
+	 * Define GPP 8,9,and 10 interrupt polarity as active low
+	 * input signal and level triggered
+	 */
+	mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, 0x700);
+	mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, 0x700);
+
+	/* Config GPP intr ctlr to respond to level trigger */
+	mv64x60_set_bits(&bh, MV64x60_COMM_ARBITER_CNTL, (1<<10));
+
+	/* Erranum FEr PCI-#8 */
+	mv64x60_clr_bits(&bh, MV64x60_PCI0_CMD, (1<<5) | (1<<9));
+	mv64x60_clr_bits(&bh, MV64x60_PCI1_CMD, (1<<5) | (1<<9));
+
+	/*
+	 * Dismiss and then enable interrupt on GPP interrupt cause
+	 * for CPU #0
+	 */
+	mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~0x700);
+	mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, 0x700);
+
+	/*
+	 * Dismiss and then enable interrupt on CPU #0 high cause reg
+	 * BIT25 summarizes GPP interrupts 8-15
+	 */
+	mv64x60_set_bits(&bh, MV64360_IC_CPU0_INTR_MASK_HI, (1<<25));
+}
+
+void __init
+ev64360_setup_peripherals(void)
+{
+	u32 base;
+
+	/* Set up window for boot CS */
+	mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
+		 EV64360_BOOT_WINDOW_BASE, EV64360_BOOT_WINDOW_SIZE, 0);
+	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
+
+	/* We only use the 32-bit flash */
+	mv64x60_get_32bit_window(&bh, MV64x60_CPU2BOOT_WIN, &base,
+		&ev64360_flash_size_0);
+	ev64360_flash_size_1 = 0;
+
+	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN,
+		 EV64360_RTC_WINDOW_BASE, EV64360_RTC_WINDOW_SIZE, 0);
+	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
+
+	mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN,
+		 EV64360_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE, 0);
+	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
+	sram_base = ioremap(EV64360_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE);
+
+	/* Set up Enet->SRAM window */
+	mv64x60_set_32bit_window(&bh, MV64x60_ENET2MEM_4_WIN,
+		EV64360_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE, 0x2);
+	bh.ci->enable_window_32bit(&bh, MV64x60_ENET2MEM_4_WIN);
+
+	/* Give enet r/w access to memory region */
+	mv64x60_set_bits(&bh, MV64360_ENET2MEM_ACC_PROT_0, (0x3 << (4 << 1)));
+	mv64x60_set_bits(&bh, MV64360_ENET2MEM_ACC_PROT_1, (0x3 << (4 << 1)));
+	mv64x60_set_bits(&bh, MV64360_ENET2MEM_ACC_PROT_2, (0x3 << (4 << 1)));
+
+	mv64x60_clr_bits(&bh, MV64x60_PCI1_PCI_DECODE_CNTL, (1 << 3));
+	mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
+			 ((1 << 0) | (1 << 8) | (1 << 16) | (1 << 24)));
+
+#if defined(CONFIG_NOT_COHERENT_CACHE)
+	mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x00160000);
+#else
+	mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b2);
+#endif
+
+	/*
+	 * Setting the SRAM to 0. Note that this generates parity errors on
+	 * internal data path in SRAM since it's first time accessing it
+	 * while after reset it's not configured.
+	 */
+	memset(sram_base, 0, MV64360_SRAM_SIZE);
+
+	/* set up PCI interrupt controller */
+	ev64360_intr_setup();
+}
+
+static void __init
+ev64360_setup_arch(void)
+{
+	if (ppc_md.progress)
+		ppc_md.progress("ev64360_setup_arch: enter", 0);
+
+	set_tb(0, 0);
+
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start)
+		ROOT_DEV = Root_RAM0;
+	else
+#endif
+#ifdef   CONFIG_ROOT_NFS
+		ROOT_DEV = Root_NFS;
+#else
+		ROOT_DEV = Root_SDA2;
+#endif
+
+	/*
+	 * Set up the L2CR register.
+	 */
+	_set_L2CR(L2CR_L2E | L2CR_L2PE);
+
+	if (ppc_md.progress)
+		ppc_md.progress("ev64360_setup_arch: calling setup_bridge", 0);
+
+	ev64360_setup_bridge();
+	ev64360_setup_peripherals();
+	ev64360_bus_frequency = ev64360_bus_freq();
+
+	printk(KERN_INFO "%s %s port (C) 2005 Lee Nicks "
+		"(allinux@gmail.com)\n", BOARD_VENDOR, BOARD_MACHINE);
+	if (ppc_md.progress)
+		ppc_md.progress("ev64360_setup_arch: exit", 0);
+}
+
+/* Platform device data fixup routines. */
+#if defined(CONFIG_SERIAL_MPSC)
+static void __init
+ev64360_fixup_mpsc_pdata(struct platform_device *pdev)
+{
+	struct mpsc_pdata *pdata;
+
+	pdata = (struct mpsc_pdata *)pdev->dev.platform_data;
+
+	pdata->max_idle = 40;
+	pdata->default_baud = EV64360_DEFAULT_BAUD;
+	pdata->brg_clk_src = EV64360_MPSC_CLK_SRC;
+	/*
+	 * TCLK (not SysCLk) is routed to BRG, then to the MPSC.  On most parts,
+	 * TCLK == SysCLK but on 64460, they are separate pins.
+	 * SysCLK can go up to 200 MHz but TCLK can only go up to 133 MHz.
+	 */
+	pdata->brg_clk_freq = min(ev64360_bus_frequency, MV64x60_TCLK_FREQ_MAX);
+}
+#endif
+
+#if defined(CONFIG_MV643XX_ETH)
+static void __init
+ev64360_fixup_eth_pdata(struct platform_device *pdev)
+{
+	struct mv643xx_eth_platform_data *eth_pd;
+	static u16 phy_addr[] = {
+		EV64360_ETH0_PHY_ADDR,
+		EV64360_ETH1_PHY_ADDR,
+		EV64360_ETH2_PHY_ADDR,
+	};
+
+	eth_pd = pdev->dev.platform_data;
+	eth_pd->force_phy_addr = 1;
+	eth_pd->phy_addr = phy_addr[pdev->id];
+	eth_pd->tx_queue_size = EV64360_ETH_TX_QUEUE_SIZE;
+	eth_pd->rx_queue_size = EV64360_ETH_RX_QUEUE_SIZE;
+}
+#endif
+
+static int __init
+ev64360_platform_notify(struct device *dev)
+{
+	static struct {
+		char	*bus_id;
+		void	((*rtn)(struct platform_device *pdev));
+	} dev_map[] = {
+#if defined(CONFIG_SERIAL_MPSC)
+		{ MPSC_CTLR_NAME ".0", ev64360_fixup_mpsc_pdata },
+		{ MPSC_CTLR_NAME ".1", ev64360_fixup_mpsc_pdata },
+#endif
+#if defined(CONFIG_MV643XX_ETH)
+		{ MV643XX_ETH_NAME ".0", ev64360_fixup_eth_pdata },
+		{ MV643XX_ETH_NAME ".1", ev64360_fixup_eth_pdata },
+		{ MV643XX_ETH_NAME ".2", ev64360_fixup_eth_pdata },
+#endif
+	};
+	struct platform_device	*pdev;
+	int	i;
+
+	if (dev && dev->bus_id)
+		for (i=0; i<ARRAY_SIZE(dev_map); i++)
+			if (!strncmp(dev->bus_id, dev_map[i].bus_id,
+				BUS_ID_SIZE)) {
+
+				pdev = container_of(dev,
+					struct platform_device, dev);
+				dev_map[i].rtn(pdev);
+			}
+
+	return 0;
+}
+
+#ifdef CONFIG_MTD_PHYSMAP
+
+#ifndef MB
+#define MB	(1 << 20)
+#endif
+
+/*
+ * MTD Layout.
+ *
+ * FLASH Amount:	0xff000000 - 0xffffffff
+ * -------------	-----------------------
+ * Reserved:		0xff000000 - 0xff03ffff
+ * JFFS2 file system:	0xff040000 - 0xffefffff
+ * U-boot:		0xfff00000 - 0xffffffff
+ */
+static int __init
+ev64360_setup_mtd(void)
+{
+	u32	size;
+	int	ptbl_entries;
+	static struct mtd_partition	*ptbl;
+
+	size = ev64360_flash_size_0 + ev64360_flash_size_1;
+	if (!size)
+		return -ENOMEM;
+
+	ptbl_entries = 3;
+
+	if ((ptbl = kmalloc(ptbl_entries * sizeof(struct mtd_partition),
+		GFP_KERNEL)) == NULL) {
+
+		printk(KERN_WARNING "Can't alloc MTD partition table\n");
+		return -ENOMEM;
+	}
+	memset(ptbl, 0, ptbl_entries * sizeof(struct mtd_partition));
+
+	ptbl[0].name = "reserved";
+	ptbl[0].offset = 0;
+	ptbl[0].size = EV64360_MTD_RESERVED_SIZE;
+	ptbl[1].name = "jffs2";
+	ptbl[1].offset = EV64360_MTD_RESERVED_SIZE;
+	ptbl[1].size = EV64360_MTD_JFFS2_SIZE;
+	ptbl[2].name = "U-BOOT";
+	ptbl[2].offset = EV64360_MTD_RESERVED_SIZE + EV64360_MTD_JFFS2_SIZE;
+	ptbl[2].size = EV64360_MTD_UBOOT_SIZE;
+
+	physmap_map.size = size;
+	physmap_set_partitions(ptbl, ptbl_entries);
+	return 0;
+}
+
+arch_initcall(ev64360_setup_mtd);
+#endif
+
+static void
+ev64360_restart(char *cmd)
+{
+	ulong	i = 0xffffffff;
+	volatile unsigned char * rtc_base = ioremap(EV64360_RTC_WINDOW_BASE,0x4000);
+
+	/* issue hard reset */
+	rtc_base[0xf] = 0x80;
+	rtc_base[0xc] = 0x00;
+	rtc_base[0xd] = 0x01;
+	rtc_base[0xf] = 0x83;
+
+	while (i-- > 0) ;
+	panic("restart failed\n");
+}
+
+static void
+ev64360_halt(void)
+{
+	while (1) ;
+	/* NOTREACHED */
+}
+
+static void
+ev64360_power_off(void)
+{
+	ev64360_halt();
+	/* NOTREACHED */
+}
+
+static int
+ev64360_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
+	seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
+	seq_printf(m, "bus speed\t: %dMHz\n", ev64360_bus_frequency/1000/1000);
+
+	return 0;
+}
+
+static void __init
+ev64360_calibrate_decr(void)
+{
+	u32 freq;
+
+	freq = ev64360_bus_frequency / 4;
+
+	printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
+	       (long)freq / 1000000, (long)freq % 1000000);
+
+	tb_ticks_per_jiffy = freq / HZ;
+	tb_to_us = mulhwu_scale_factor(freq, 1000000);
+}
+
+unsigned long __init
+ev64360_find_end_of_memory(void)
+{
+	return mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE,
+		MV64x60_TYPE_MV64360);
+}
+
+static inline void
+ev64360_set_bat(void)
+{
+	mb();
+	mtspr(SPRN_DBAT2U, 0xf0001ffe);
+	mtspr(SPRN_DBAT2L, 0xf000002a);
+	mb();
+}
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) && defined(CONFIG_SERIAL_MPSC_CONSOLE)
+static void __init
+ev64360_map_io(void)
+{
+	io_block_mapping(CONFIG_MV64X60_NEW_BASE, \
+			 CONFIG_MV64X60_NEW_BASE, \
+			 0x00020000, _PAGE_IO);
+}
+#endif
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	      unsigned long r6, unsigned long r7)
+{
+	parse_bootinfo(find_bootinfo());
+
+	/* ASSUMPTION:  If both r3 (bd_t pointer) and r6 (cmdline pointer)
+	 * are non-zero, then we should use the board info from the bd_t
+	 * structure and the cmdline pointed to by r6 instead of the
+	 * information from birecs, if any.  Otherwise, use the information
+	 * from birecs as discovered by the preceeding call to
+	 * parse_bootinfo().  This rule should work with both PPCBoot, which
+	 * uses a bd_t board info structure, and the kernel boot wrapper,
+	 * which uses birecs.
+	 */
+	if (r3 && r6) {
+		/* copy board info structure */
+		memcpy( (void *)__res,(void *)(r3+KERNELBASE), sizeof(bd_t) );
+		/* copy command line */
+		*(char *)(r7+KERNELBASE) = 0;
+		strcpy(cmd_line, (char *)(r6+KERNELBASE));
+	}
+	#ifdef CONFIG_ISA
+	isa_mem_base = 0;
+	#endif
+
+	ppc_md.setup_arch = ev64360_setup_arch;
+	ppc_md.show_cpuinfo = ev64360_show_cpuinfo;
+	ppc_md.init_IRQ = mv64360_init_irq;
+	ppc_md.get_irq = mv64360_get_irq;
+	ppc_md.restart = ev64360_restart;
+	ppc_md.power_off = ev64360_power_off;
+	ppc_md.halt = ev64360_halt;
+	ppc_md.find_end_of_memory = ev64360_find_end_of_memory;
+	ppc_md.calibrate_decr = ev64360_calibrate_decr;
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) && defined(CONFIG_SERIAL_MPSC_CONSOLE)
+	ppc_md.setup_io_mappings = ev64360_map_io;
+	ppc_md.progress = mv64x60_mpsc_progress;
+	mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
+#endif
+
+#if defined(CONFIG_SERIAL_MPSC) || defined(CONFIG_MV643XX_ETH)
+	platform_notify = ev64360_platform_notify;
+#endif
+
+	ev64360_set_bat(); /* Need for ev64360_find_end_of_memory and progress */
+}