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linux/arch/ppc/platforms/ev64360.c
Lee Nicks 3acb23440f [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>
2005-09-05 00:05:59 -07:00

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/*
* 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 */
}
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