diff options
Diffstat (limited to 'arch/ppc/platforms/ev64360.c')
| -rw-r--r-- | arch/ppc/platforms/ev64360.c | 510 |
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 0000000..9811a8a --- /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 */ +} |