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a497aa20e5
linux-next/arch/ppc/platforms/radstone_ppc7d.c
Chris Elston a497aa20e5 [PATCH] ppc32: add rtc hooks in PPC7D platform file 
This patch adds the hooks into the PPC7D platforms file to support the DS1337
RTC device as the clock device for the PPC7D board.

Signed-off-by: Chris Elston <chris.elston@radstone.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:58:41 -07:00

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/*
* arch/ppc/platforms/radstone_ppc7d.c
*
* Board setup routines for the Radstone PPC7D boards.
*
* Author: James Chapman <jchapman@katalix.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.
*/
/* Radstone PPC7D boards are rugged VME boards with PPC 7447A CPUs,
* Discovery-II, dual gigabit ethernet, dual PMC, USB, keyboard/mouse,
* 4 serial ports, 2 high speed serial ports (MPSCs) and optional
* SCSI / VGA.
*/
#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/initrd.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/ide.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/serial.h>
#include <linux/tty.h> /* for linux/serial_core.h */
#include <linux/serial_core.h>
#include <linux/mv643xx.h>
#include <linux/netdevice.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/time.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/smp.h>
#include <asm/vga.h>
#include <asm/open_pic.h>
#include <asm/i8259.h>
#include <asm/todc.h>
#include <asm/bootinfo.h>
#include <asm/mpc10x.h>
#include <asm/pci-bridge.h>
#include <asm/mv64x60.h>
#include <asm/i8259.h>
#include "radstone_ppc7d.h"
#undef DEBUG
#define PPC7D_RST_PIN 17 /* GPP17 */
extern u32 mv64360_irq_base;
extern spinlock_t rtc_lock;
static struct mv64x60_handle bh;
static int ppc7d_has_alma;
extern void gen550_progress(char *, unsigned short);
extern void gen550_init(int, struct uart_port *);
/* FIXME - move to h file */
extern int ds1337_do_command(int id, int cmd, void *arg);
#define DS1337_GET_DATE 0
#define DS1337_SET_DATE 1
/* residual data */
unsigned char __res[sizeof(bd_t)];
/*****************************************************************************
* Serial port code
*****************************************************************************/
#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
static void __init ppc7d_early_serial_map(void)
{
#if defined(CONFIG_SERIAL_MPSC_CONSOLE)
mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
#elif defined(CONFIG_SERIAL_8250)
struct uart_port serial_req;
/* Setup serial port access */
memset(&serial_req, 0, sizeof(serial_req));
serial_req.uartclk = UART_CLK;
serial_req.irq = 4;
serial_req.flags = STD_COM_FLAGS;
serial_req.iotype = SERIAL_IO_MEM;
serial_req.membase = (u_char *) PPC7D_SERIAL_0;
gen550_init(0, &serial_req);
if (early_serial_setup(&serial_req) != 0)
printk(KERN_ERR "Early serial init of port 0 failed\n");
/* Assume early_serial_setup() doesn't modify serial_req */
serial_req.line = 1;
serial_req.irq = 3;
serial_req.membase = (u_char *) PPC7D_SERIAL_1;
gen550_init(1, &serial_req);
if (early_serial_setup(&serial_req) != 0)
printk(KERN_ERR "Early serial init of port 1 failed\n");
#else
#error CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
#endif
}
#endif /* CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG */
/*****************************************************************************
* Low-level board support code
*****************************************************************************/
static unsigned long __init ppc7d_find_end_of_memory(void)
{
bd_t *bp = (bd_t *) __res;
if (bp->bi_memsize)
return bp->bi_memsize;
return (256 * 1024 * 1024);
}
static void __init ppc7d_map_io(void)
{
/* remove temporary mapping */
mtspr(SPRN_DBAT3U, 0x00000000);
mtspr(SPRN_DBAT3L, 0x00000000);
io_block_mapping(0xe8000000, 0xe8000000, 0x08000000, _PAGE_IO);
io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _PAGE_IO);
}
static void ppc7d_restart(char *cmd)
{
u32 data;
/* Disable GPP17 interrupt */
data = mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
data &= ~(1 << PPC7D_RST_PIN);
mv64x60_write(&bh, MV64x60_GPP_INTR_MASK, data);
/* Configure MPP17 as GPP */
data = mv64x60_read(&bh, MV64x60_MPP_CNTL_2);
data &= ~(0x0000000f << 4);
mv64x60_write(&bh, MV64x60_MPP_CNTL_2, data);
/* Enable pin GPP17 for output */
data = mv64x60_read(&bh, MV64x60_GPP_IO_CNTL);
data |= (1 << PPC7D_RST_PIN);
mv64x60_write(&bh, MV64x60_GPP_IO_CNTL, data);
/* Toggle GPP9 pin to reset the board */
mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, 1 << PPC7D_RST_PIN);
mv64x60_write(&bh, MV64x60_GPP_VALUE_SET, 1 << PPC7D_RST_PIN);
for (;;) ; /* Spin until reset happens */
/* NOTREACHED */
}
static void ppc7d_power_off(void)
{
u32 data;
local_irq_disable();
/* Ensure that internal MV643XX watchdog is disabled.
* The Disco watchdog uses MPP17 on this hardware.
*/
data = mv64x60_read(&bh, MV64x60_MPP_CNTL_2);
data &= ~(0x0000000f << 4);
mv64x60_write(&bh, MV64x60_MPP_CNTL_2, data);
data = mv64x60_read(&bh, MV64x60_WDT_WDC);
if (data & 0x80000000) {
mv64x60_write(&bh, MV64x60_WDT_WDC, 1 << 24);
mv64x60_write(&bh, MV64x60_WDT_WDC, 2 << 24);
}
for (;;) ; /* No way to shut power off with software */
/* NOTREACHED */
}
static void ppc7d_halt(void)
{
ppc7d_power_off();
/* NOTREACHED */
}
static unsigned long ppc7d_led_no_pulse;
static int __init ppc7d_led_pulse_disable(char *str)
{
ppc7d_led_no_pulse = 1;
return 1;
}
/* This kernel option disables the heartbeat pulsing of a board LED */
__setup("ledoff", ppc7d_led_pulse_disable);
static void ppc7d_heartbeat(void)
{
u32 data32;
u8 data8;
static int max706_wdog = 0;
/* Unfortunately we can't access the LED control registers
* during early init because they're on the CPLD which is the
* other side of a PCI bridge which goes unreachable during
* PCI scan. So write the LEDs only if the MV64360 watchdog is
* enabled (i.e. userspace apps are running so kernel is up)..
*/
data32 = mv64x60_read(&bh, MV64x60_WDT_WDC);
if (data32 & 0x80000000) {
/* Enable MAX706 watchdog if not done already */
if (!max706_wdog) {
outb(3, PPC7D_CPLD_RESET);
max706_wdog = 1;
}
/* Hit the MAX706 watchdog */
outb(0, PPC7D_CPLD_WATCHDOG_TRIG);
/* Pulse LED DS219 if not disabled */
if (!ppc7d_led_no_pulse) {
static int led_on = 0;
data8 = inb(PPC7D_CPLD_LEDS);
if (led_on)
data8 &= ~PPC7D_CPLD_LEDS_DS219_MASK;
else
data8 |= PPC7D_CPLD_LEDS_DS219_MASK;
outb(data8, PPC7D_CPLD_LEDS);
led_on = !led_on;
}
}
ppc_md.heartbeat_count = ppc_md.heartbeat_reset;
}
static int ppc7d_show_cpuinfo(struct seq_file *m)
{
u8 val;
u8 val1, val2;
static int flash_sizes[4] = { 64, 32, 0, 16 };
static int flash_banks[4] = { 4, 3, 2, 1 };
static int sdram_bank_sizes[4] = { 128, 256, 512, 1 };
int sdram_num_banks = 2;
static char *pci_modes[] = { "PCI33", "PCI66",
"Unknown", "Unknown",
"PCIX33", "PCIX66",
"PCIX100", "PCIX133"
};
seq_printf(m, "vendor\t\t: Radstone Technology\n");
seq_printf(m, "machine\t\t: PPC7D\n");
val = inb(PPC7D_CPLD_BOARD_REVISION);
val1 = (val & PPC7D_CPLD_BOARD_REVISION_NUMBER_MASK) >> 5;
val2 = (val & PPC7D_CPLD_BOARD_REVISION_LETTER_MASK);
seq_printf(m, "revision\t: %hd%c%c\n",
val1,
(val2 <= 0x18) ? 'A' + val2 : 'Y',
(val2 > 0x18) ? 'A' + (val2 - 0x19) : ' ');
val = inb(PPC7D_CPLD_MOTHERBOARD_TYPE);
val1 = val & PPC7D_CPLD_MB_TYPE_PLL_MASK;
val2 = val & (PPC7D_CPLD_MB_TYPE_ECC_FITTED_MASK |
PPC7D_CPLD_MB_TYPE_ECC_ENABLE_MASK);
seq_printf(m, "bus speed\t: %dMHz\n",
(val1 == PPC7D_CPLD_MB_TYPE_PLL_133) ? 133 :
(val1 == PPC7D_CPLD_MB_TYPE_PLL_100) ? 100 :
(val1 == PPC7D_CPLD_MB_TYPE_PLL_64) ? 64 : 0);
val = inb(PPC7D_CPLD_MEM_CONFIG);
if (val & PPC7D_CPLD_SDRAM_BANK_NUM_MASK) sdram_num_banks--;
val = inb(PPC7D_CPLD_MEM_CONFIG_EXTEND);
val1 = (val & PPC7D_CPLD_SDRAM_BANK_SIZE_MASK) >> 6;
seq_printf(m, "SDRAM\t\t: %d banks of %d%c, total %d%c",
sdram_num_banks,
sdram_bank_sizes[val1],
(sdram_bank_sizes[val1] < 128) ? 'G' : 'M',
sdram_num_banks * sdram_bank_sizes[val1],
(sdram_bank_sizes[val1] < 128) ? 'G' : 'M');
if (val2 & PPC7D_CPLD_MB_TYPE_ECC_FITTED_MASK) {
seq_printf(m, " [ECC %sabled]",
(val2 & PPC7D_CPLD_MB_TYPE_ECC_ENABLE_MASK) ? "en" :
"dis");
}
seq_printf(m, "\n");
val1 = (val & PPC7D_CPLD_FLASH_DEV_SIZE_MASK);
val2 = (val & PPC7D_CPLD_FLASH_BANK_NUM_MASK) >> 2;
seq_printf(m, "FLASH\t\t: %d banks of %dM, total %dM\n",
flash_banks[val2], flash_sizes[val1],
flash_banks[val2] * flash_sizes[val1]);
val = inb(PPC7D_CPLD_FLASH_WRITE_CNTL);
val1 = inb(PPC7D_CPLD_SW_FLASH_WRITE_PROTECT);
seq_printf(m, " write links\t: %s%s%s%s\n",
(val & PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK) ? "WRITE " : "",
(val & PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK) ? "BOOT " : "",
(val & PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK) ? "USER " : "",
(val & (PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK |
PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK |
PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK)) ==
0 ? "NONE" : "");
seq_printf(m, " write sector h/w enables: %s%s%s%s%s\n",
(val & PPD7D_CPLD_FLASH_CNTL_RECO_WR_MASK) ? "RECOVERY " :
"",
(val & PPD7D_CPLD_FLASH_CNTL_BOOT_WR_MASK) ? "BOOT " : "",
(val & PPD7D_CPLD_FLASH_CNTL_USER_WR_MASK) ? "USER " : "",
(val1 & PPC7D_CPLD_FLASH_CNTL_NVRAM_PROT_MASK) ? "NVRAM " :
"",
(((val &
(PPD7D_CPLD_FLASH_CNTL_RECO_WR_MASK |
PPD7D_CPLD_FLASH_CNTL_BOOT_WR_MASK |
PPD7D_CPLD_FLASH_CNTL_BOOT_WR_MASK)) == 0)
&& ((val1 & PPC7D_CPLD_FLASH_CNTL_NVRAM_PROT_MASK) ==
0)) ? "NONE" : "");
val1 =
inb(PPC7D_CPLD_SW_FLASH_WRITE_PROTECT) &
(PPC7D_CPLD_SW_FLASH_WRPROT_SYSBOOT_MASK |
PPC7D_CPLD_SW_FLASH_WRPROT_USER_MASK);
seq_printf(m, " software sector enables: %s%s%s\n",
(val1 & PPC7D_CPLD_SW_FLASH_WRPROT_SYSBOOT_MASK) ? "SYSBOOT "
: "",
(val1 & PPC7D_CPLD_SW_FLASH_WRPROT_USER_MASK) ? "USER " : "",
(val1 == 0) ? "NONE " : "");
seq_printf(m, "Boot options\t: %s%s%s%s\n",
(val & PPC7D_CPLD_FLASH_CNTL_ALTBOOT_LINK_MASK) ?
"ALTERNATE " : "",
(val & PPC7D_CPLD_FLASH_CNTL_VMEBOOT_LINK_MASK) ? "VME " :
"",
(val & PPC7D_CPLD_FLASH_CNTL_RECBOOT_LINK_MASK) ? "RECOVERY "
: "",
((val &
(PPC7D_CPLD_FLASH_CNTL_ALTBOOT_LINK_MASK |
PPC7D_CPLD_FLASH_CNTL_VMEBOOT_LINK_MASK |
PPC7D_CPLD_FLASH_CNTL_RECBOOT_LINK_MASK)) ==
0) ? "NONE" : "");
val = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_1);
seq_printf(m, "Fitted modules\t: %s%s%s%s\n",
(val & PPC7D_CPLD_EQPT_PRES_1_PMC1_MASK) ? "" : "PMC1 ",
(val & PPC7D_CPLD_EQPT_PRES_1_PMC2_MASK) ? "" : "PMC2 ",
(val & PPC7D_CPLD_EQPT_PRES_1_AFIX_MASK) ? "AFIX " : "",
((val & (PPC7D_CPLD_EQPT_PRES_1_PMC1_MASK |
PPC7D_CPLD_EQPT_PRES_1_PMC2_MASK |
PPC7D_CPLD_EQPT_PRES_1_AFIX_MASK)) ==
(PPC7D_CPLD_EQPT_PRES_1_PMC1_MASK |
PPC7D_CPLD_EQPT_PRES_1_PMC2_MASK)) ? "NONE" : "");
if (val & PPC7D_CPLD_EQPT_PRES_1_AFIX_MASK) {
static const char *ids[] = {
"unknown",
"1553 (Dual Channel)",
"1553 (Single Channel)",
"8-bit SCSI + VGA",
"16-bit SCSI + VGA",
"1553 (Single Channel with sideband)",
"1553 (Dual Channel with sideband)",
NULL
};
u8 id = __raw_readb((void *)PPC7D_AFIX_REG_BASE + 0x03);
seq_printf(m, "AFIX module\t: 0x%hx [%s]\n", id,
id < 7 ? ids[id] : "unknown");
}
val = inb(PPC7D_CPLD_PCI_CONFIG);
val1 = (val & PPC7D_CPLD_PCI_CONFIG_PCI0_MASK) >> 4;
val2 = (val & PPC7D_CPLD_PCI_CONFIG_PCI1_MASK);
seq_printf(m, "PCI#0\t\t: %s\nPCI#1\t\t: %s\n",
pci_modes[val1], pci_modes[val2]);
val = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_2);
seq_printf(m, "PMC1\t\t: %s\nPMC2\t\t: %s\n",
(val & PPC7D_CPLD_EQPT_PRES_3_PMC1_V_MASK) ? "3.3v" : "5v",
(val & PPC7D_CPLD_EQPT_PRES_3_PMC2_V_MASK) ? "3.3v" : "5v");
seq_printf(m, "PMC power source: %s\n",
(val & PPC7D_CPLD_EQPT_PRES_3_PMC_POWER_MASK) ? "VME" :
"internal");
val = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_4);
val2 = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_2);
seq_printf(m, "Fit options\t: %s%s%s%s%s%s%s\n",
(val & PPC7D_CPLD_EQPT_PRES_4_LPT_MASK) ? "LPT " : "",
(val & PPC7D_CPLD_EQPT_PRES_4_PS2_FITTED) ? "PS2 " : "",
(val & PPC7D_CPLD_EQPT_PRES_4_USB2_FITTED) ? "USB2 " : "",
(val2 & PPC7D_CPLD_EQPT_PRES_2_UNIVERSE_MASK) ? "VME " : "",
(val2 & PPC7D_CPLD_EQPT_PRES_2_COM36_MASK) ? "COM3-6 " : "",
(val2 & PPC7D_CPLD_EQPT_PRES_2_GIGE_MASK) ? "eth0 " : "",
(val2 & PPC7D_CPLD_EQPT_PRES_2_DUALGIGE_MASK) ? "eth1 " :
"");
val = inb(PPC7D_CPLD_ID_LINK);
val1 = val & (PPC7D_CPLD_ID_LINK_E6_MASK |
PPC7D_CPLD_ID_LINK_E7_MASK |
PPC7D_CPLD_ID_LINK_E12_MASK |
PPC7D_CPLD_ID_LINK_E13_MASK);
val = inb(PPC7D_CPLD_FLASH_WRITE_CNTL) &
(PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK |
PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK |
PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK);
seq_printf(m, "Board links present: %s%s%s%s%s%s%s%s\n",
(val1 & PPC7D_CPLD_ID_LINK_E6_MASK) ? "E6 " : "",
(val1 & PPC7D_CPLD_ID_LINK_E7_MASK) ? "E7 " : "",
(val & PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK) ? "E9 " : "",
(val & PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK) ? "E10 " : "",
(val & PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK) ? "E11 " : "",
(val1 & PPC7D_CPLD_ID_LINK_E12_MASK) ? "E12 " : "",
(val1 & PPC7D_CPLD_ID_LINK_E13_MASK) ? "E13 " : "",
((val == 0) && (val1 == 0)) ? "NONE" : "");
val = inb(PPC7D_CPLD_WDOG_RESETSW_MASK);
seq_printf(m, "Front panel reset switch: %sabled\n",
(val & PPC7D_CPLD_WDOG_RESETSW_MASK) ? "dis" : "en");
return 0;
}
static void __init ppc7d_calibrate_decr(void)
{
ulong freq;
freq = 100000000 / 4;
pr_debug("time_init: decrementer frequency = %lu.%.6lu MHz\n",
freq / 1000000, freq % 1000000);
tb_ticks_per_jiffy = freq / HZ;
tb_to_us = mulhwu_scale_factor(freq, 1000000);
}
/*****************************************************************************
* Interrupt stuff
*****************************************************************************/
static irqreturn_t ppc7d_i8259_intr(int irq, void *dev_id, struct pt_regs *regs)
{
u32 temp = mv64x60_read(&bh, MV64x60_GPP_INTR_CAUSE);
if (temp & (1 << 28)) {
i8259_irq(regs);
mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, temp & (~(1 << 28)));
return IRQ_HANDLED;
}
return IRQ_NONE;
}
/*
* Each interrupt cause is assigned an IRQ number.
* Southbridge has 16*2 (two 8259's) interrupts.
* Discovery-II has 96 interrupts (cause-hi, cause-lo, gpp x 32).
* If multiple interrupts are pending, get_irq() returns the
* lowest pending irq number first.
*
*
* IRQ # Source Trig Active
* =============================================================
*
* Southbridge
* -----------
* IRQ # Source Trig
* =============================================================
* 0 ISA High Resolution Counter Edge
* 1 Keyboard Edge
* 2 Cascade From (IRQ 8-15) Edge
* 3 Com 2 (Uart 2) Edge
* 4 Com 1 (Uart 1) Edge
* 5 PCI Int D/AFIX IRQZ ID4 (2,7) Level
* 6 GPIO Level
* 7 LPT Edge
* 8 RTC Alarm Edge
* 9 PCI Int A/PMC 2/AFIX IRQW ID1 (2,0) Level
* 10 PCI Int B/PMC 1/AFIX IRQX ID2 (2,1) Level
* 11 USB2 Level
* 12 Mouse Edge
* 13 Reserved internally by Ali M1535+
* 14 PCI Int C/VME/AFIX IRQY ID3 (2,6) Level
* 15 COM 5/6 Level
*
* 16..112 Discovery-II...
*
* MPP28 Southbridge Edge High
*
*
* Interrupts are cascaded through to the Discovery-II.
*
* PCI ---
* \
* CPLD --> ALI1535 -------> DISCOVERY-II
* INTF MPP28
*/
static void __init ppc7d_init_irq(void)
{
int irq;
pr_debug("%s\n", __FUNCTION__);
i8259_init(0);
mv64360_init_irq();
/* IRQ 0..15 are handled by the cascaded 8259's of the Ali1535 */
for (irq = 0; irq < 16; irq++) {
irq_desc[irq].handler = &i8259_pic;
}
/* IRQs 5,6,9,10,11,14,15 are level sensitive */
irq_desc[5].status |= IRQ_LEVEL;
irq_desc[6].status |= IRQ_LEVEL;
irq_desc[9].status |= IRQ_LEVEL;
irq_desc[10].status |= IRQ_LEVEL;
irq_desc[11].status |= IRQ_LEVEL;
irq_desc[14].status |= IRQ_LEVEL;
irq_desc[15].status |= IRQ_LEVEL;
/* GPP28 is edge triggered */
irq_desc[mv64360_irq_base + MV64x60_IRQ_GPP28].status &= ~IRQ_LEVEL;
}
static u32 ppc7d_irq_canonicalize(u32 irq)
{
if ((irq >= 16) && (irq < (16 + 96)))
irq -= 16;
return irq;
}
static int ppc7d_get_irq(struct pt_regs *regs)
{
int irq;
irq = mv64360_get_irq(regs);
if (irq == (mv64360_irq_base + MV64x60_IRQ_GPP28))
irq = i8259_irq(regs);
return irq;
}
/*
* 9 PCI Int A/PMC 2/AFIX IRQW ID1 (2,0) Level
* 10 PCI Int B/PMC 1/AFIX IRQX ID2 (2,1) Level
* 14 PCI Int C/VME/AFIX IRQY ID3 (2,6) Level
* 5 PCI Int D/AFIX IRQZ ID4 (2,7) Level
*/
static int __init ppc7d_map_irq(struct pci_dev *dev, unsigned char idsel,
unsigned char pin)
{
static const char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{10, 14, 5, 9}, /* IDSEL 10 - PMC2 / AFIX IRQW */
{9, 10, 14, 5}, /* IDSEL 11 - PMC1 / AFIX IRQX */
{5, 9, 10, 14}, /* IDSEL 12 - AFIX IRQY */
{14, 5, 9, 10}, /* IDSEL 13 - AFIX IRQZ */
};
const long min_idsel = 10, max_idsel = 14, irqs_per_slot = 4;
pr_debug("%s: %04x/%04x/%x: idsel=%hx pin=%hu\n", __FUNCTION__,
dev->vendor, dev->device, PCI_FUNC(dev->devfn), idsel, pin);
return PCI_IRQ_TABLE_LOOKUP;
}
void __init ppc7d_intr_setup(void)
{
u32 data;
/*
* Define GPP 28 interrupt polarity as active high
* input signal and level triggered
*/
data = mv64x60_read(&bh, MV64x60_GPP_LEVEL_CNTL);
data &= ~(1 << 28);
mv64x60_write(&bh, MV64x60_GPP_LEVEL_CNTL, data);
data = mv64x60_read(&bh, MV64x60_GPP_IO_CNTL);
data &= ~(1 << 28);
mv64x60_write(&bh, MV64x60_GPP_IO_CNTL, data);
/* Config GPP intr ctlr to respond to level trigger */
data = mv64x60_read(&bh, MV64x60_COMM_ARBITER_CNTL);
data |= (1 << 10);
mv64x60_write(&bh, MV64x60_COMM_ARBITER_CNTL, data);
/* XXXX Erranum FEr PCI-#8 */
data = mv64x60_read(&bh, MV64x60_PCI0_CMD);
data &= ~((1 << 5) | (1 << 9));
mv64x60_write(&bh, MV64x60_PCI0_CMD, data);
data = mv64x60_read(&bh, MV64x60_PCI1_CMD);
data &= ~((1 << 5) | (1 << 9));
mv64x60_write(&bh, MV64x60_PCI1_CMD, data);
/*
* Dismiss and then enable interrupt on GPP interrupt cause
* for CPU #0
*/
mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~(1 << 28));
data = mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
data |= (1 << 28);
mv64x60_write(&bh, MV64x60_GPP_INTR_MASK, data);
/*
* Dismiss and then enable interrupt on CPU #0 high cause reg
* BIT27 summarizes GPP interrupts 23-31
*/
mv64x60_write(&bh, MV64360_IC_MAIN_CAUSE_HI, ~(1 << 27));
data = mv64x60_read(&bh, MV64360_IC_CPU0_INTR_MASK_HI);
data |= (1 << 27);
mv64x60_write(&bh, MV64360_IC_CPU0_INTR_MASK_HI, data);
}
/*****************************************************************************
* Platform device data fixup routines.
*****************************************************************************/
#if defined(CONFIG_SERIAL_MPSC)
static void __init ppc7d_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 = PPC7D_DEFAULT_BAUD;
pdata->brg_clk_src = PPC7D_MPSC_CLK_SRC;
pdata->brg_clk_freq = PPC7D_MPSC_CLK_FREQ;
return;
}
#endif
#if defined(CONFIG_MV643XX_ETH)
static void __init ppc7d_fixup_eth_pdata(struct platform_device *pdev)
{
struct mv643xx_eth_platform_data *eth_pd;
static u16 phy_addr[] = {
PPC7D_ETH0_PHY_ADDR,
PPC7D_ETH1_PHY_ADDR,
PPC7D_ETH2_PHY_ADDR,
};
int i;
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 = PPC7D_ETH_TX_QUEUE_SIZE;
eth_pd->rx_queue_size = PPC7D_ETH_RX_QUEUE_SIZE;
/* Adjust IRQ by mv64360_irq_base */
for (i = 0; i < pdev->num_resources; i++) {
struct resource *r = &pdev->resource[i];
if (r->flags & IORESOURCE_IRQ) {
r->start += mv64360_irq_base;
r->end += mv64360_irq_base;
pr_debug("%s, uses IRQ %d\n", pdev->name,
(int)r->start);
}
}
}
#endif
#if defined(CONFIG_I2C_MV64XXX)
static void __init
ppc7d_fixup_i2c_pdata(struct platform_device *pdev)
{
struct mv64xxx_i2c_pdata *pdata;
int i;
pdata = pdev->dev.platform_data;
if (pdata == NULL) {
pdata = kmalloc(sizeof(*pdata), GFP_KERNEL);
if (pdata == NULL)
return;
memset(pdata, 0, sizeof(*pdata));
pdev->dev.platform_data = pdata;
}
/* divisors M=8, N=3 for 100kHz I2C from 133MHz system clock */
pdata->freq_m = 8;
pdata->freq_n = 3;
pdata->timeout = 500;
pdata->retries = 3;
/* Adjust IRQ by mv64360_irq_base */
for (i = 0; i < pdev->num_resources; i++) {
struct resource *r = &pdev->resource[i];
if (r->flags & IORESOURCE_IRQ) {
r->start += mv64360_irq_base;
r->end += mv64360_irq_base;
pr_debug("%s, uses IRQ %d\n", pdev->name, (int) r->start);
}
}
}
#endif
static int __init ppc7d_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", ppc7d_fixup_mpsc_pdata },
{ MPSC_CTLR_NAME ".1", ppc7d_fixup_mpsc_pdata },
#endif
#if defined(CONFIG_MV643XX_ETH)
{ MV643XX_ETH_NAME ".0", ppc7d_fixup_eth_pdata },
{ MV643XX_ETH_NAME ".1", ppc7d_fixup_eth_pdata },
{ MV643XX_ETH_NAME ".2", ppc7d_fixup_eth_pdata },
#endif
#if defined(CONFIG_I2C_MV64XXX)
{ MV64XXX_I2C_CTLR_NAME ".0", ppc7d_fixup_i2c_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;
}
/*****************************************************************************
* PCI device fixups.
* These aren't really fixups per se. They are used to init devices as they
* are found during PCI scan.
*
* The PPC7D has an HB8 PCI-X bridge which must be set up during a PCI
* scan in order to find other devices on its secondary side.
*****************************************************************************/
static void __init ppc7d_fixup_hb8(struct pci_dev *dev)
{
u16 val16;
if (dev->bus->number == 0) {
pr_debug("PCI: HB8 init\n");
pci_write_config_byte(dev, 0x1c,
((PPC7D_PCI0_IO_START_PCI_ADDR & 0xf000)
>> 8) | 0x01);
pci_write_config_byte(dev, 0x1d,
(((PPC7D_PCI0_IO_START_PCI_ADDR +
PPC7D_PCI0_IO_SIZE -
1) & 0xf000) >> 8) | 0x01);
pci_write_config_word(dev, 0x30,
PPC7D_PCI0_IO_START_PCI_ADDR >> 16);
pci_write_config_word(dev, 0x32,
((PPC7D_PCI0_IO_START_PCI_ADDR +
PPC7D_PCI0_IO_SIZE -
1) >> 16) & 0xffff);
pci_write_config_word(dev, 0x20,
PPC7D_PCI0_MEM0_START_PCI_LO_ADDR >> 16);
pci_write_config_word(dev, 0x22,
((PPC7D_PCI0_MEM0_START_PCI_LO_ADDR +
PPC7D_PCI0_MEM0_SIZE -
1) >> 16) & 0xffff);
pci_write_config_word(dev, 0x24, 0);
pci_write_config_word(dev, 0x26, 0);
pci_write_config_dword(dev, 0x28, 0);
pci_write_config_dword(dev, 0x2c, 0);
pci_read_config_word(dev, 0x3e, &val16);
val16 |= ((1 << 5) | (1 << 1)); /* signal master aborts and
* SERR to primary
*/
val16 &= ~(1 << 2); /* ISA disable, so all ISA
* ports forwarded to secondary
*/
pci_write_config_word(dev, 0x3e, val16);
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0028, ppc7d_fixup_hb8);
/* This should perhaps be a separate driver as we're actually initializing
* the chip for this board here. It's hardly a fixup...
*/
static void __init ppc7d_fixup_ali1535(struct pci_dev *dev)
{
pr_debug("PCI: ALI1535 init\n");
if (dev->bus->number == 1) {
/* Configure the ISA Port Settings */
pci_write_config_byte(dev, 0x43, 0x00);
/* Disable PCI Interrupt polling mode */
pci_write_config_byte(dev, 0x45, 0x00);
/* Multifunction pin select INTFJ -> INTF */
pci_write_config_byte(dev, 0x78, 0x00);
/* Set PCI INT -> IRQ Routing control in for external
* pins south bridge.
*/
pci_write_config_byte(dev, 0x48, 0x31); /* [7-4] INT B -> IRQ10
* [3-0] INT A -> IRQ9
*/
pci_write_config_byte(dev, 0x49, 0x5D); /* [7-4] INT D -> IRQ5
* [3-0] INT C -> IRQ14
*/
/* PPC7D setup */
/* NEC USB device on IRQ 11 (INTE) - INTF disabled */
pci_write_config_byte(dev, 0x4A, 0x09);
/* GPIO on IRQ 6 */
pci_write_config_byte(dev, 0x76, 0x07);
/* SIRQ I (COMS 5/6) use IRQ line 15.
* Positive (not subtractive) address decode.
*/
pci_write_config_byte(dev, 0x44, 0x0f);
/* SIRQ II disabled */
pci_write_config_byte(dev, 0x75, 0x0);
/* On board USB and RTC disabled */
pci_write_config_word(dev, 0x52, (1 << 14));
pci_write_config_byte(dev, 0x74, 0x00);
/* On board IDE disabled */
pci_write_config_byte(dev, 0x58, 0x00);
/* Decode 32-bit addresses */
pci_write_config_byte(dev, 0x5b, 0);
/* Disable docking IO */
pci_write_config_word(dev, 0x5c, 0x0000);
/* Disable modem, enable sound */
pci_write_config_byte(dev, 0x77, (1 << 6));
/* Disable hot-docking mode */
pci_write_config_byte(dev, 0x7d, 0x00);
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1533, ppc7d_fixup_ali1535);
static int ppc7d_pci_exclude_device(u8 bus, u8 devfn)
{
/* Early versions of this board were fitted with IBM ALMA
* PCI-VME bridge chips. The PCI config space of these devices
* was not set up correctly and causes PCI scan problems.
*/
if ((bus == 1) && (PCI_SLOT(devfn) == 4) && ppc7d_has_alma)
return PCIBIOS_DEVICE_NOT_FOUND;
return mv64x60_pci_exclude_device(bus, devfn);
}
/* This hook is called when each PCI bus is probed.
*/
static void ppc7d_pci_fixup_bus(struct pci_bus *bus)
{
pr_debug("PCI BUS %hu: %lx/%lx %lx/%lx %lx/%lx %lx/%lx\n",
bus->number,
bus->resource[0] ? bus->resource[0]->start : 0,
bus->resource[0] ? bus->resource[0]->end : 0,
bus->resource[1] ? bus->resource[1]->start : 0,
bus->resource[1] ? bus->resource[1]->end : 0,
bus->resource[2] ? bus->resource[2]->start : 0,
bus->resource[2] ? bus->resource[2]->end : 0,
bus->resource[3] ? bus->resource[3]->start : 0,
bus->resource[3] ? bus->resource[3]->end : 0);
if ((bus->number == 1) && (bus->resource[2] != NULL)) {
/* Hide PCI window 2 of Bus 1 which is used only to
* map legacy ISA memory space.
*/
bus->resource[2]->start = 0;
bus->resource[2]->end = 0;
bus->resource[2]->flags = 0;
}
}
/*****************************************************************************
* Board device setup code
*****************************************************************************/
void __init ppc7d_setup_peripherals(void)
{
u32 val32;
/* Set up windows for boot CS */
mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
PPC7D_BOOT_WINDOW_BASE, PPC7D_BOOT_WINDOW_SIZE,
0);
bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
/* Boot firmware configures the following DevCS addresses.
* DevCS0 - board control/status
* DevCS1 - test registers
* DevCS2 - AFIX port/address registers (for identifying)
* DevCS3 - FLASH
*
* We don't use DevCS0, DevCS1.
*/
val32 = mv64x60_read(&bh, MV64360_CPU_BAR_ENABLE);
val32 |= ((1 << 4) | (1 << 5));
mv64x60_write(&bh, MV64360_CPU_BAR_ENABLE, val32);
mv64x60_write(&bh, MV64x60_CPU2DEV_0_BASE, 0);
mv64x60_write(&bh, MV64x60_CPU2DEV_0_SIZE, 0);
mv64x60_write(&bh, MV64x60_CPU2DEV_1_BASE, 0);
mv64x60_write(&bh, MV64x60_CPU2DEV_1_SIZE, 0);
mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN,
PPC7D_AFIX_REG_BASE, PPC7D_AFIX_REG_SIZE, 0);
bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);
mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_3_WIN,
PPC7D_FLASH_BASE, PPC7D_FLASH_SIZE_ACTUAL, 0);
bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_3_WIN);
mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN,
PPC7D_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE,
0);
bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
/* Set up Enet->SRAM window */
mv64x60_set_32bit_window(&bh, MV64x60_ENET2MEM_4_WIN,
PPC7D_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 */
val32 = mv64x60_read(&bh, MV64360_ENET2MEM_ACC_PROT_0);
val32 |= (0x3 << (4 << 1));
mv64x60_write(&bh, MV64360_ENET2MEM_ACC_PROT_0, val32);
val32 = mv64x60_read(&bh, MV64360_ENET2MEM_ACC_PROT_1);
val32 |= (0x3 << (4 << 1));
mv64x60_write(&bh, MV64360_ENET2MEM_ACC_PROT_1, val32);
val32 = mv64x60_read(&bh, MV64360_ENET2MEM_ACC_PROT_2);
val32 |= (0x3 << (4 << 1));
mv64x60_write(&bh, MV64360_ENET2MEM_ACC_PROT_2, val32);
val32 = mv64x60_read(&bh, MV64x60_TIMR_CNTR_0_3_CNTL);
val32 &= ~((1 << 0) | (1 << 8) | (1 << 16) | (1 << 24));
mv64x60_write(&bh, MV64x60_TIMR_CNTR_0_3_CNTL, val32);
/* Enumerate pci bus.
*
* We scan PCI#0 first (the bus with the HB8 and other
* on-board peripherals). We must configure the 64360 before
* each scan, according to the bus number assignments. Busses
* are assigned incrementally, starting at 0. PCI#0 is
* usually assigned bus#0, the secondary side of the HB8 gets
* bus#1 and PCI#1 (second PMC site) gets bus#2. However, if
* any PMC card has a PCI bridge, these bus assignments will
* change.
*/
/* Turn off PCI retries */
val32 = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
val32 |= (1 << 17);
mv64x60_write(&bh, MV64x60_CPU_CONFIG, val32);
/* Scan PCI#0 */
mv64x60_set_bus(&bh, 0, 0);
bh.hose_a->first_busno = 0;
bh.hose_a->last_busno = 0xff;
bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);
printk(KERN_INFO "PCI#0: first=%d last=%d\n",
bh.hose_a->first_busno, bh.hose_a->last_busno);
/* Scan PCI#1 */
bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
bh.hose_b->last_busno = 0xff;
bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
bh.hose_b->first_busno);
printk(KERN_INFO "PCI#1: first=%d last=%d\n",
bh.hose_b->first_busno, bh.hose_b->last_busno);
/* Turn on PCI retries */
val32 = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
val32 &= ~(1 << 17);
mv64x60_write(&bh, MV64x60_CPU_CONFIG, val32);
/* Setup interrupts */
ppc7d_intr_setup();
}
static void __init ppc7d_setup_bridge(void)
{
struct mv64x60_setup_info si;
int i;
u32 temp;
mv64360_irq_base = 16; /* first 16 intrs are 2 x 8259's */
memset(&si, 0, sizeof(si));
si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
si.pci_0.enable_bus = 1;
si.pci_0.pci_io.cpu_base = PPC7D_PCI0_IO_START_PROC_ADDR;
si.pci_0.pci_io.pci_base_hi = 0;
si.pci_0.pci_io.pci_base_lo = PPC7D_PCI0_IO_START_PCI_ADDR;
si.pci_0.pci_io.size = PPC7D_PCI0_IO_SIZE;
si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_0.pci_mem[0].cpu_base = PPC7D_PCI0_MEM0_START_PROC_ADDR;
si.pci_0.pci_mem[0].pci_base_hi = PPC7D_PCI0_MEM0_START_PCI_HI_ADDR;
si.pci_0.pci_mem[0].pci_base_lo = PPC7D_PCI0_MEM0_START_PCI_LO_ADDR;
si.pci_0.pci_mem[0].size = PPC7D_PCI0_MEM0_SIZE;
si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_0.pci_mem[1].cpu_base = PPC7D_PCI0_MEM1_START_PROC_ADDR;
si.pci_0.pci_mem[1].pci_base_hi = PPC7D_PCI0_MEM1_START_PCI_HI_ADDR;
si.pci_0.pci_mem[1].pci_base_lo = PPC7D_PCI0_MEM1_START_PCI_LO_ADDR;
si.pci_0.pci_mem[1].size = PPC7D_PCI0_MEM1_SIZE;
si.pci_0.pci_mem[1].swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_0.pci_cmd_bits = 0;
si.pci_0.latency_timer = 0x80;
si.pci_1.enable_bus = 1;
si.pci_1.pci_io.cpu_base = PPC7D_PCI1_IO_START_PROC_ADDR;
si.pci_1.pci_io.pci_base_hi = 0;
si.pci_1.pci_io.pci_base_lo = PPC7D_PCI1_IO_START_PCI_ADDR;
si.pci_1.pci_io.size = PPC7D_PCI1_IO_SIZE;
si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_1.pci_mem[0].cpu_base = PPC7D_PCI1_MEM0_START_PROC_ADDR;
si.pci_1.pci_mem[0].pci_base_hi = PPC7D_PCI1_MEM0_START_PCI_HI_ADDR;
si.pci_1.pci_mem[0].pci_base_lo = PPC7D_PCI1_MEM0_START_PCI_LO_ADDR;
si.pci_1.pci_mem[0].size = PPC7D_PCI1_MEM0_SIZE;
si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_1.pci_mem[1].cpu_base = PPC7D_PCI1_MEM1_START_PROC_ADDR;
si.pci_1.pci_mem[1].pci_base_hi = PPC7D_PCI1_MEM1_START_PCI_HI_ADDR;
si.pci_1.pci_mem[1].pci_base_lo = PPC7D_PCI1_MEM1_START_PCI_LO_ADDR;
si.pci_1.pci_mem[1].size = PPC7D_PCI1_MEM1_SIZE;
si.pci_1.pci_mem[1].swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_1.pci_cmd_bits = 0;
si.pci_1.latency_timer = 0x80;
/* Don't clear the SRAM window since we use it for debug */
si.window_preserve_mask_32_lo = (1 << MV64x60_CPU2SRAM_WIN);
printk(KERN_INFO "PCI: MV64360 PCI#0 IO at %x, size %x\n",
si.pci_0.pci_io.cpu_base, si.pci_0.pci_io.size);
printk(KERN_INFO "PCI: MV64360 PCI#1 IO at %x, size %x\n",
si.pci_1.pci_io.cpu_base, si.pci_1.pci_io.size);
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_0.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;
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;
/* All PPC7D hardware uses B0 or newer MV64360 silicon which
* does not have snoop bugs.
*/
si.enet_options[i] = MV64360_ENET2MEM_SNOOP_WB;
si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_WB;
si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_WB;
si.pci_0.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;
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
}
/* Lookup PCI host bridges */
if (mv64x60_init(&bh, &si))
printk(KERN_ERR "MV64360 initialization failed.\n");
pr_debug("MV64360 regs @ %lx/%p\n", bh.p_base, bh.v_base);
/* Enable WB Cache coherency on SRAM */
temp = mv64x60_read(&bh, MV64360_SRAM_CONFIG);
pr_debug("SRAM_CONFIG: %x\n", temp);
#if defined(CONFIG_NOT_COHERENT_CACHE)
mv64x60_write(&bh, MV64360_SRAM_CONFIG, temp & ~0x2);
#else
mv64x60_write(&bh, MV64360_SRAM_CONFIG, temp | 0x2);
#endif
/* If system operates with internal bus arbiter (CPU master
* control bit8) clear AACK Delay bit [25] in CPU
* configuration register.
*/
temp = mv64x60_read(&bh, MV64x60_CPU_MASTER_CNTL);
if (temp & (1 << 8)) {
temp = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
mv64x60_write(&bh, MV64x60_CPU_CONFIG, (temp & ~(1 << 25)));
}
/* Data and address parity is enabled */
temp = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
mv64x60_write(&bh, MV64x60_CPU_CONFIG,
(temp | (1 << 26) | (1 << 19)));
pci_dram_offset = 0; /* sys mem at same addr on PCI & cpu bus */
ppc_md.pci_swizzle = common_swizzle;
ppc_md.pci_map_irq = ppc7d_map_irq;
ppc_md.pci_exclude_device = ppc7d_pci_exclude_device;
mv64x60_set_bus(&bh, 0, 0);
bh.hose_a->first_busno = 0;
bh.hose_a->last_busno = 0xff;
bh.hose_a->mem_space.start = PPC7D_PCI0_MEM0_START_PCI_LO_ADDR;
bh.hose_a->mem_space.end =
PPC7D_PCI0_MEM0_START_PCI_LO_ADDR + PPC7D_PCI0_MEM0_SIZE;
/* These will be set later, as a result of PCI0 scan */
bh.hose_b->first_busno = 0;
bh.hose_b->last_busno = 0xff;
bh.hose_b->mem_space.start = PPC7D_PCI1_MEM0_START_PCI_LO_ADDR;
bh.hose_b->mem_space.end =
PPC7D_PCI1_MEM0_START_PCI_LO_ADDR + PPC7D_PCI1_MEM0_SIZE;
pr_debug("MV64360: PCI#0 IO decode %08x/%08x IO remap %08x\n",
mv64x60_read(&bh, 0x48), mv64x60_read(&bh, 0x50),
mv64x60_read(&bh, 0xf0));
}
static void __init ppc7d_setup_arch(void)
{
int port;
loops_per_jiffy = 100000000 / HZ;
#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_HDA1;
#endif
if ((cur_cpu_spec[0]->cpu_features & CPU_FTR_SPEC7450) ||
(cur_cpu_spec[0]->cpu_features & CPU_FTR_L3CR))
/* 745x is different. We only want to pass along enable. */
_set_L2CR(L2CR_L2E);
else if (cur_cpu_spec[0]->cpu_features & CPU_FTR_L2CR)
/* All modules have 1MB of L2. We also assume that an
* L2 divisor of 3 will work.
*/
_set_L2CR(L2CR_L2E | L2CR_L2SIZ_1MB | L2CR_L2CLK_DIV3
| L2CR_L2RAM_PIPE | L2CR_L2OH_1_0 | L2CR_L2DF);
if (cur_cpu_spec[0]->cpu_features & CPU_FTR_L3CR)
/* No L3 cache */
_set_L3CR(0);
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
/* Lookup PCI host bridges */
if (ppc_md.progress)
ppc_md.progress("ppc7d_setup_arch: calling setup_bridge", 0);
ppc7d_setup_bridge();
ppc7d_setup_peripherals();
/* Disable ethernet. It might have been setup by the bootrom */
for (port = 0; port < 3; port++)
mv64x60_write(&bh, MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port),
0x0000ff00);
/* Clear queue pointers to ensure they are all initialized,
* otherwise since queues 1-7 are unused, they have random
* pointers which look strange in register dumps. Don't bother
* with queue 0 since it will be initialized later.
*/
for (port = 0; port < 3; port++) {
mv64x60_write(&bh,
MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_1(port),
0x00000000);
mv64x60_write(&bh,
MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_2(port),
0x00000000);
mv64x60_write(&bh,
MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_3(port),
0x00000000);
mv64x60_write(&bh,
MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_4(port),
0x00000000);
mv64x60_write(&bh,
MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_5(port),
0x00000000);
mv64x60_write(&bh,
MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_6(port),
0x00000000);
mv64x60_write(&bh,
MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_7(port),
0x00000000);
}
printk(KERN_INFO "Radstone Technology PPC7D\n");
if (ppc_md.progress)
ppc_md.progress("ppc7d_setup_arch: exit", 0);
}
/* Real Time Clock support.
* PPC7D has a DS1337 accessed by I2C.
*/
static ulong ppc7d_get_rtc_time(void)
{
struct rtc_time tm;
int result;
spin_lock(&rtc_lock);
result = ds1337_do_command(0, DS1337_GET_DATE, &tm);
spin_unlock(&rtc_lock);
if (result == 0)
result = mktime(tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
return result;
}
static int ppc7d_set_rtc_time(unsigned long nowtime)
{
struct rtc_time tm;
int result;
spin_lock(&rtc_lock);
to_tm(nowtime, &tm);
result = ds1337_do_command(0, DS1337_SET_DATE, &tm);
spin_unlock(&rtc_lock);
return result;
}
/* This kernel command line parameter can be used to have the target
* wait for a JTAG debugger to attach. Of course, a JTAG debugger
* with hardware breakpoint support can have the target stop at any
* location during init, but this is a convenience feature that makes
* it easier in the common case of loading the code using the ppcboot
* bootloader..
*/
static unsigned long ppc7d_wait_debugger;
static int __init ppc7d_waitdbg(char *str)
{
ppc7d_wait_debugger = 1;
return 1;
}
__setup("waitdbg", ppc7d_waitdbg);
/* Second phase board init, called after other (architecture common)
* low-level services have been initialized.
*/
static void ppc7d_init2(void)
{
unsigned long flags;
u32 data;
u8 data8;
pr_debug("%s: enter\n", __FUNCTION__);
/* Wait for debugger? */
if (ppc7d_wait_debugger) {
printk("Waiting for debugger...\n");
while (readl(&ppc7d_wait_debugger)) ;
}
/* Hook up i8259 interrupt which is connected to GPP28 */
request_irq(mv64360_irq_base + MV64x60_IRQ_GPP28, ppc7d_i8259_intr,
SA_INTERRUPT, "I8259 (GPP28) interrupt", (void *)0);
/* Configure MPP16 as watchdog NMI, MPP17 as watchdog WDE */
spin_lock_irqsave(&mv64x60_lock, flags);
data = mv64x60_read(&bh, MV64x60_MPP_CNTL_2);
data &= ~(0x0000000f << 0);
data |= (0x00000004 << 0);
data &= ~(0x0000000f << 4);
data |= (0x00000004 << 4);
mv64x60_write(&bh, MV64x60_MPP_CNTL_2, data);
spin_unlock_irqrestore(&mv64x60_lock, flags);
/* All LEDs off */
data8 = inb(PPC7D_CPLD_LEDS);
data8 &= ~0x08;
data8 |= 0x07;
outb(data8, PPC7D_CPLD_LEDS);
/* Hook up RTC. We couldn't do this earlier because we need the I2C subsystem */
ppc_md.set_rtc_time = ppc7d_set_rtc_time;
ppc_md.get_rtc_time = ppc7d_get_rtc_time;
pr_debug("%s: exit\n", __FUNCTION__);
}
/* Called from machine_init(), early, before any of the __init functions
* have run. We must init software-configurable pins before other functions
* such as interrupt controllers are initialised.
*/
void __init platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
u8 val8;
u8 rev_num;
/* Map 0xe0000000-0xffffffff early because we need access to SRAM
* and the ISA memory space (for serial port) here. This mapping
* is redone properly in ppc7d_map_io() later.
*/
mtspr(SPRN_DBAT3U, 0xe0003fff);
mtspr(SPRN_DBAT3L, 0xe000002a);
/*
* Zero SRAM. Note that this generates parity errors on
* internal data path in SRAM if it's first time accessing it
* after reset.
*
* We do this ASAP to avoid parity errors when reading
* uninitialized SRAM.
*/
memset((void *)PPC7D_INTERNAL_SRAM_BASE, 0, MV64360_SRAM_SIZE);
pr_debug("platform_init: r3-r7: %lx %lx %lx %lx %lx\n",
r3, r4, r5, r6, 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) {
bd_t *bp = (bd_t *) __res;
/* 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));
printk(KERN_INFO "Board info data:-\n");
printk(KERN_INFO " Internal freq: %lu MHz, bus freq: %lu MHz\n",
bp->bi_intfreq, bp->bi_busfreq);
printk(KERN_INFO " Memory: %lx, size %lx\n", bp->bi_memstart,
bp->bi_memsize);
printk(KERN_INFO " Console baudrate: %lu\n", bp->bi_baudrate);
printk(KERN_INFO " Ethernet address: "
"%02x:%02x:%02x:%02x:%02x:%02x\n",
bp->bi_enetaddr[0], bp->bi_enetaddr[1],
bp->bi_enetaddr[2], bp->bi_enetaddr[3],
bp->bi_enetaddr[4], bp->bi_enetaddr[5]);
}
#ifdef CONFIG_BLK_DEV_INITRD
/* take care of initrd if we have one */
if (r4) {
initrd_start = r4 + KERNELBASE;
initrd_end = r5 + KERNELBASE;
printk(KERN_INFO "INITRD @ %lx/%lx\n", initrd_start, initrd_end);
}
#endif /* CONFIG_BLK_DEV_INITRD */
/* Map in board regs, etc. */
isa_io_base = 0xe8000000;
isa_mem_base = 0xe8000000;
pci_dram_offset = 0x00000000;
ISA_DMA_THRESHOLD = 0x00ffffff;
DMA_MODE_READ = 0x44;
DMA_MODE_WRITE = 0x48;
ppc_md.setup_arch = ppc7d_setup_arch;
ppc_md.init = ppc7d_init2;
ppc_md.show_cpuinfo = ppc7d_show_cpuinfo;
ppc_md.irq_canonicalize = ppc7d_irq_canonicalize;
ppc_md.init_IRQ = ppc7d_init_irq;
ppc_md.get_irq = ppc7d_get_irq;
ppc_md.restart = ppc7d_restart;
ppc_md.power_off = ppc7d_power_off;
ppc_md.halt = ppc7d_halt;
ppc_md.find_end_of_memory = ppc7d_find_end_of_memory;
ppc_md.setup_io_mappings = ppc7d_map_io;
ppc_md.time_init = NULL;
ppc_md.set_rtc_time = NULL;
ppc_md.get_rtc_time = NULL;
ppc_md.calibrate_decr = ppc7d_calibrate_decr;
ppc_md.nvram_read_val = NULL;
ppc_md.nvram_write_val = NULL;
ppc_md.heartbeat = ppc7d_heartbeat;
ppc_md.heartbeat_reset = HZ;
ppc_md.heartbeat_count = ppc_md.heartbeat_reset;
ppc_md.pcibios_fixup_bus = ppc7d_pci_fixup_bus;
#if defined(CONFIG_SERIAL_MPSC) || defined(CONFIG_MV643XX_ETH) || \
defined(CONFIG_I2C_MV64XXX)
platform_notify = ppc7d_platform_notify;
#endif
#ifdef CONFIG_SERIAL_MPSC
/* On PPC7D, we must configure MPSC support via CPLD control
* registers.
*/
outb(PPC7D_CPLD_RTS_COM4_SCLK |
PPC7D_CPLD_RTS_COM56_ENABLED, PPC7D_CPLD_RTS);
outb(PPC7D_CPLD_COMS_COM3_TCLKEN |
PPC7D_CPLD_COMS_COM3_TXEN |
PPC7D_CPLD_COMS_COM4_TCLKEN |
PPC7D_CPLD_COMS_COM4_TXEN, PPC7D_CPLD_COMS);
#endif /* CONFIG_SERIAL_MPSC */
#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc7d_early_serial_map();
#ifdef CONFIG_SERIAL_TEXT_DEBUG
#if defined(CONFIG_SERIAL_MPSC_CONSOLE)
ppc_md.progress = mv64x60_mpsc_progress;
#elif defined(CONFIG_SERIAL_8250)
ppc_md.progress = gen550_progress;
#else
#error CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
#endif /* CONFIG_SERIAL_8250 */
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
#endif /* CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG */
/* Enable write access to user flash. This is necessary for
* flash probe.
*/
val8 = readb((void *)isa_io_base + PPC7D_CPLD_SW_FLASH_WRITE_PROTECT);
writeb(val8 | (PPC7D_CPLD_SW_FLASH_WRPROT_ENABLED &
PPC7D_CPLD_SW_FLASH_WRPROT_USER_MASK),
(void *)isa_io_base + PPC7D_CPLD_SW_FLASH_WRITE_PROTECT);
/* Determine if this board has IBM ALMA VME devices */
val8 = readb((void *)isa_io_base + PPC7D_CPLD_BOARD_REVISION);
rev_num = (val8 & PPC7D_CPLD_BOARD_REVISION_NUMBER_MASK) >> 5;
if (rev_num <= 1)
ppc7d_has_alma = 1;
#ifdef DEBUG
console_printk[0] = 8;
#endif
}
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