forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
3.6 KiB
136 lines
3.6 KiB
/* |
|
* TX3927 setup routines |
|
* Based on linux/arch/mips/txx9/jmr3927/setup.c |
|
* |
|
* Copyright 2001 MontaVista Software Inc. |
|
* Copyright (C) 2000-2001 Toshiba Corporation |
|
* Copyright (C) 2007 Ralf Baechle ([email protected]) |
|
* |
|
* This file is subject to the terms and conditions of the GNU General Public |
|
* License. See the file "COPYING" in the main directory of this archive |
|
* for more details. |
|
*/ |
|
#include <linux/init.h> |
|
#include <linux/ioport.h> |
|
#include <linux/delay.h> |
|
#include <linux/param.h> |
|
#include <linux/io.h> |
|
#include <linux/mtd/physmap.h> |
|
#include <asm/mipsregs.h> |
|
#include <asm/txx9irq.h> |
|
#include <asm/txx9tmr.h> |
|
#include <asm/txx9pio.h> |
|
#include <asm/txx9/generic.h> |
|
#include <asm/txx9/tx3927.h> |
|
|
|
void __init tx3927_wdt_init(void) |
|
{ |
|
txx9_wdt_init(TX3927_TMR_REG(2)); |
|
} |
|
|
|
void __init tx3927_setup(void) |
|
{ |
|
int i; |
|
unsigned int conf; |
|
|
|
txx9_reg_res_init(TX3927_REV_PCODE(), TX3927_REG_BASE, |
|
TX3927_REG_SIZE); |
|
|
|
/* SDRAMC,ROMC are configured by PROM */ |
|
for (i = 0; i < 8; i++) { |
|
if (!(tx3927_romcptr->cr[i] & 0x8)) |
|
continue; /* disabled */ |
|
txx9_ce_res[i].start = (unsigned long)TX3927_ROMC_BA(i); |
|
txx9_ce_res[i].end = |
|
txx9_ce_res[i].start + TX3927_ROMC_SIZE(i) - 1; |
|
request_resource(&iomem_resource, &txx9_ce_res[i]); |
|
} |
|
|
|
/* clocks */ |
|
txx9_gbus_clock = txx9_cpu_clock / 2; |
|
/* change default value to udelay/mdelay take reasonable time */ |
|
loops_per_jiffy = txx9_cpu_clock / HZ / 2; |
|
|
|
/* CCFG */ |
|
/* enable Timeout BusError */ |
|
if (txx9_ccfg_toeon) |
|
tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE; |
|
|
|
/* clear BusErrorOnWrite flag */ |
|
tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW; |
|
if (read_c0_conf() & TX39_CONF_WBON) |
|
/* Disable PCI snoop */ |
|
tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP; |
|
else |
|
/* Enable PCI SNOOP - with write through only */ |
|
tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP; |
|
/* do reset on watchdog */ |
|
tx3927_ccfgptr->ccfg |= TX3927_CCFG_WR; |
|
|
|
pr_info("TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n", |
|
tx3927_ccfgptr->crir, tx3927_ccfgptr->ccfg, |
|
tx3927_ccfgptr->pcfg); |
|
|
|
/* TMR */ |
|
for (i = 0; i < TX3927_NR_TMR; i++) |
|
txx9_tmr_init(TX3927_TMR_REG(i)); |
|
|
|
/* DMA */ |
|
tx3927_dmaptr->mcr = 0; |
|
for (i = 0; i < ARRAY_SIZE(tx3927_dmaptr->ch); i++) { |
|
/* reset channel */ |
|
tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST; |
|
tx3927_dmaptr->ch[i].ccr = 0; |
|
} |
|
/* enable DMA */ |
|
#ifdef __BIG_ENDIAN |
|
tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN; |
|
#else |
|
tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE; |
|
#endif |
|
|
|
/* PIO */ |
|
__raw_writel(0, &tx3927_pioptr->maskcpu); |
|
__raw_writel(0, &tx3927_pioptr->maskext); |
|
|
|
conf = read_c0_conf(); |
|
if (conf & TX39_CONF_DCE) { |
|
if (!(conf & TX39_CONF_WBON)) |
|
pr_info("TX3927 D-Cache WriteThrough.\n"); |
|
else if (!(conf & TX39_CONF_CWFON)) |
|
pr_info("TX3927 D-Cache WriteBack.\n"); |
|
else |
|
pr_info("TX3927 D-Cache WriteBack (CWF) .\n"); |
|
} |
|
} |
|
|
|
void __init tx3927_time_init(unsigned int evt_tmrnr, unsigned int src_tmrnr) |
|
{ |
|
txx9_clockevent_init(TX3927_TMR_REG(evt_tmrnr), |
|
TXX9_IRQ_BASE + TX3927_IR_TMR(evt_tmrnr), |
|
TXX9_IMCLK); |
|
txx9_clocksource_init(TX3927_TMR_REG(src_tmrnr), TXX9_IMCLK); |
|
} |
|
|
|
void __init tx3927_sio_init(unsigned int sclk, unsigned int cts_mask) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < 2; i++) |
|
txx9_sio_init(TX3927_SIO_REG(i), |
|
TXX9_IRQ_BASE + TX3927_IR_SIO(i), |
|
i, sclk, (1 << i) & cts_mask); |
|
} |
|
|
|
void __init tx3927_mtd_init(int ch) |
|
{ |
|
struct physmap_flash_data pdata = { |
|
.width = TX3927_ROMC_WIDTH(ch) / 8, |
|
}; |
|
unsigned long start = txx9_ce_res[ch].start; |
|
unsigned long size = txx9_ce_res[ch].end - start + 1; |
|
|
|
if (!(tx3927_romcptr->cr[ch] & 0x8)) |
|
return; /* disabled */ |
|
txx9_physmap_flash_init(ch, start, size, &pdata); |
|
}
|
|
|