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linux_dsm_epyc7002/arch/ppc/platforms/ev64360.c
Lee Nicks 2104da90a9 [PATCH] ppc32: add watchdog & RTC support for Marvell EV64360BP board 
This patch adds watchdog, RTC support for Marvell EV64360BP board.

Signed-off-by: Lee Nicks <allinux@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:26 -08:00

525 lines
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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>
#include <linux/platform_device.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 <asm/machdep.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)];
TODC_ALLOC();
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);
TODC_INIT(TODC_TYPE_DS1501, 0, 0,
ioremap(EV64360_RTC_WINDOW_BASE, EV64360_RTC_WINDOW_SIZE), 8);
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.init = NULL;
ppc_md.time_init = todc_time_init;
ppc_md.set_rtc_time = todc_set_rtc_time;
ppc_md.get_rtc_time = todc_get_rtc_time;
ppc_md.nvram_read_val = todc_direct_read_val;
ppc_md.nvram_write_val = todc_direct_write_val;
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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