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-rw-r--r--arch/mips/txx9/rbtx4938/Makefile3
-rw-r--r--arch/mips/txx9/rbtx4938/irq.c169
-rw-r--r--arch/mips/txx9/rbtx4938/prom.c29
-rw-r--r--arch/mips/txx9/rbtx4938/setup.c625
-rw-r--r--arch/mips/txx9/rbtx4938/spi_eeprom.c99
5 files changed, 925 insertions, 0 deletions
diff --git a/arch/mips/txx9/rbtx4938/Makefile b/arch/mips/txx9/rbtx4938/Makefile
new file mode 100644
index 00000000000..9dcc52ae5b9
--- /dev/null
+++ b/arch/mips/txx9/rbtx4938/Makefile
@@ -0,0 +1,3 @@
+obj-y += prom.o setup.o irq.o spi_eeprom.o
+
+EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/txx9/rbtx4938/irq.c b/arch/mips/txx9/rbtx4938/irq.c
new file mode 100644
index 00000000000..3971a061657
--- /dev/null
+++ b/arch/mips/txx9/rbtx4938/irq.c
@@ -0,0 +1,169 @@
+/*
+ * Toshiba RBTX4938 specific interrupt handlers
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
+ */
+
+/*
+IRQ Device
+
+16 TX4938-CP0/00 Software 0
+17 TX4938-CP0/01 Software 1
+18 TX4938-CP0/02 Cascade TX4938-CP0
+19 TX4938-CP0/03 Multiplexed -- do not use
+20 TX4938-CP0/04 Multiplexed -- do not use
+21 TX4938-CP0/05 Multiplexed -- do not use
+22 TX4938-CP0/06 Multiplexed -- do not use
+23 TX4938-CP0/07 CPU TIMER
+
+24 TX4938-PIC/00
+25 TX4938-PIC/01
+26 TX4938-PIC/02 Cascade RBTX4938-IOC
+27 TX4938-PIC/03 RBTX4938 RTL-8019AS Ethernet
+28 TX4938-PIC/04
+29 TX4938-PIC/05 TX4938 ETH1
+30 TX4938-PIC/06 TX4938 ETH0
+31 TX4938-PIC/07
+32 TX4938-PIC/08 TX4938 SIO 0
+33 TX4938-PIC/09 TX4938 SIO 1
+34 TX4938-PIC/10 TX4938 DMA0
+35 TX4938-PIC/11 TX4938 DMA1
+36 TX4938-PIC/12 TX4938 DMA2
+37 TX4938-PIC/13 TX4938 DMA3
+38 TX4938-PIC/14
+39 TX4938-PIC/15
+40 TX4938-PIC/16 TX4938 PCIC
+41 TX4938-PIC/17 TX4938 TMR0
+42 TX4938-PIC/18 TX4938 TMR1
+43 TX4938-PIC/19 TX4938 TMR2
+44 TX4938-PIC/20
+45 TX4938-PIC/21
+46 TX4938-PIC/22 TX4938 PCIERR
+47 TX4938-PIC/23
+48 TX4938-PIC/24
+49 TX4938-PIC/25
+50 TX4938-PIC/26
+51 TX4938-PIC/27
+52 TX4938-PIC/28
+53 TX4938-PIC/29
+54 TX4938-PIC/30
+55 TX4938-PIC/31 TX4938 SPI
+
+56 RBTX4938-IOC/00 PCI-D
+57 RBTX4938-IOC/01 PCI-C
+58 RBTX4938-IOC/02 PCI-B
+59 RBTX4938-IOC/03 PCI-A
+60 RBTX4938-IOC/04 RTC
+61 RBTX4938-IOC/05 ATA
+62 RBTX4938-IOC/06 MODEM
+63 RBTX4938-IOC/07 SWINT
+*/
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <asm/mipsregs.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/rbtx4938.h>
+
+static void toshiba_rbtx4938_irq_ioc_enable(unsigned int irq);
+static void toshiba_rbtx4938_irq_ioc_disable(unsigned int irq);
+
+#define TOSHIBA_RBTX4938_IOC_NAME "RBTX4938-IOC"
+static struct irq_chip toshiba_rbtx4938_irq_ioc_type = {
+ .name = TOSHIBA_RBTX4938_IOC_NAME,
+ .ack = toshiba_rbtx4938_irq_ioc_disable,
+ .mask = toshiba_rbtx4938_irq_ioc_disable,
+ .mask_ack = toshiba_rbtx4938_irq_ioc_disable,
+ .unmask = toshiba_rbtx4938_irq_ioc_enable,
+};
+
+static int toshiba_rbtx4938_irq_nested(int sw_irq)
+{
+ u8 level3;
+
+ level3 = readb(rbtx4938_imstat_addr);
+ if (level3)
+ /* must use fls so onboard ATA has priority */
+ sw_irq = RBTX4938_IRQ_IOC + fls(level3) - 1;
+ return sw_irq;
+}
+
+/**********************************************************************************/
+/* Functions for ioc */
+/**********************************************************************************/
+static void __init
+toshiba_rbtx4938_irq_ioc_init(void)
+{
+ int i;
+
+ for (i = RBTX4938_IRQ_IOC;
+ i < RBTX4938_IRQ_IOC + RBTX4938_NR_IRQ_IOC; i++)
+ set_irq_chip_and_handler(i, &toshiba_rbtx4938_irq_ioc_type,
+ handle_level_irq);
+
+ set_irq_chained_handler(RBTX4938_IRQ_IOCINT, handle_simple_irq);
+}
+
+static void
+toshiba_rbtx4938_irq_ioc_enable(unsigned int irq)
+{
+ unsigned char v;
+
+ v = readb(rbtx4938_imask_addr);
+ v |= (1 << (irq - RBTX4938_IRQ_IOC));
+ writeb(v, rbtx4938_imask_addr);
+ mmiowb();
+}
+
+static void
+toshiba_rbtx4938_irq_ioc_disable(unsigned int irq)
+{
+ unsigned char v;
+
+ v = readb(rbtx4938_imask_addr);
+ v &= ~(1 << (irq - RBTX4938_IRQ_IOC));
+ writeb(v, rbtx4938_imask_addr);
+ mmiowb();
+}
+
+static int rbtx4938_irq_dispatch(int pending)
+{
+ int irq;
+
+ if (pending & STATUSF_IP7)
+ irq = MIPS_CPU_IRQ_BASE + 7;
+ else if (pending & STATUSF_IP2) {
+ irq = txx9_irq();
+ if (irq == RBTX4938_IRQ_IOCINT)
+ irq = toshiba_rbtx4938_irq_nested(irq);
+ } else if (pending & STATUSF_IP1)
+ irq = MIPS_CPU_IRQ_BASE + 0;
+ else if (pending & STATUSF_IP0)
+ irq = MIPS_CPU_IRQ_BASE + 1;
+ else
+ irq = -1;
+ return irq;
+}
+
+void __init rbtx4938_irq_setup(void)
+{
+ txx9_irq_dispatch = rbtx4938_irq_dispatch;
+ /* Now, interrupt control disabled, */
+ /* all IRC interrupts are masked, */
+ /* all IRC interrupt mode are Low Active. */
+
+ /* mask all IOC interrupts */
+ writeb(0, rbtx4938_imask_addr);
+
+ /* clear SoftInt interrupts */
+ writeb(0, rbtx4938_softint_addr);
+ tx4938_irq_init();
+ toshiba_rbtx4938_irq_ioc_init();
+ /* Onboard 10M Ether: High Active */
+ set_irq_type(RBTX4938_IRQ_ETHER, IRQF_TRIGGER_HIGH);
+}
diff --git a/arch/mips/txx9/rbtx4938/prom.c b/arch/mips/txx9/rbtx4938/prom.c
new file mode 100644
index 00000000000..fbb37458ddb
--- /dev/null
+++ b/arch/mips/txx9/rbtx4938/prom.c
@@ -0,0 +1,29 @@
+/*
+ * rbtx4938 specific prom routines
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
+ */
+
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <asm/bootinfo.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/rbtx4938.h>
+
+void __init rbtx4938_prom_init(void)
+{
+ extern int tx4938_get_mem_size(void);
+ int msize;
+#ifndef CONFIG_TX4938_NAND_BOOT
+ prom_init_cmdline();
+#endif
+
+ msize = tx4938_get_mem_size();
+ add_memory_region(0, msize << 20, BOOT_MEM_RAM);
+}
diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c
new file mode 100644
index 00000000000..aaa987ae0f8
--- /dev/null
+++ b/arch/mips/txx9/rbtx4938/setup.c
@@ -0,0 +1,625 @@
+/*
+ * Setup pointers to hardware-dependent routines.
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
+ */
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/console.h>
+#include <linux/pm.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/txx9tmr.h>
+#include <asm/io.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/pci.h>
+#include <asm/txx9/rbtx4938.h>
+#ifdef CONFIG_SERIAL_TXX9
+#include <linux/serial_core.h>
+#endif
+#include <linux/spi/spi.h>
+#include <asm/txx9/spi.h>
+#include <asm/txx9pio.h>
+
+static int tx4938_ccfg_toeon = 1;
+
+static void rbtx4938_machine_halt(void)
+{
+ printk(KERN_NOTICE "System Halted\n");
+ local_irq_disable();
+
+ while (1)
+ __asm__(".set\tmips3\n\t"
+ "wait\n\t"
+ ".set\tmips0");
+}
+
+static void rbtx4938_machine_power_off(void)
+{
+ rbtx4938_machine_halt();
+ /* no return */
+}
+
+static void rbtx4938_machine_restart(char *command)
+{
+ local_irq_disable();
+
+ printk("Rebooting...");
+ writeb(1, rbtx4938_softresetlock_addr);
+ writeb(1, rbtx4938_sfvol_addr);
+ writeb(1, rbtx4938_softreset_addr);
+ while(1)
+ ;
+}
+
+static void __init rbtx4938_pci_setup(void)
+{
+#ifdef CONFIG_PCI
+ int extarb = !(__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB);
+ struct pci_controller *c = &txx9_primary_pcic;
+
+ register_pci_controller(c);
+
+ if (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66)
+ txx9_pci_option =
+ (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
+ TXX9_PCI_OPT_CLK_66; /* already configured */
+
+ /* Reset PCI Bus */
+ writeb(0, rbtx4938_pcireset_addr);
+ /* Reset PCIC */
+ txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+ TXX9_PCI_OPT_CLK_66)
+ tx4938_pciclk66_setup();
+ mdelay(10);
+ /* clear PCIC reset */
+ txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ writeb(1, rbtx4938_pcireset_addr);
+ iob();
+
+ tx4938_report_pciclk();
+ tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
+ if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+ TXX9_PCI_OPT_CLK_AUTO &&
+ txx9_pci66_check(c, 0, 0)) {
+ /* Reset PCI Bus */
+ writeb(0, rbtx4938_pcireset_addr);
+ /* Reset PCIC */
+ txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ tx4938_pciclk66_setup();
+ mdelay(10);
+ /* clear PCIC reset */
+ txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ writeb(1, rbtx4938_pcireset_addr);
+ iob();
+ /* Reinitialize PCIC */
+ tx4938_report_pciclk();
+ tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
+ }
+
+ if (__raw_readq(&tx4938_ccfgptr->pcfg) &
+ (TX4938_PCFG_ETH0_SEL|TX4938_PCFG_ETH1_SEL)) {
+ /* Reset PCIC1 */
+ txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
+ /* PCI1DMD==0 => PCI1CLK==GBUSCLK/2 => PCI66 */
+ if (!(__raw_readq(&tx4938_ccfgptr->ccfg)
+ & TX4938_CCFG_PCI1DMD))
+ tx4938_ccfg_set(TX4938_CCFG_PCI1_66);
+ mdelay(10);
+ /* clear PCIC1 reset */
+ txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
+ tx4938_report_pci1clk();
+
+ /* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
+ c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
+ register_pci_controller(c);
+ tx4927_pcic_setup(tx4938_pcic1ptr, c, 0);
+ }
+#endif /* CONFIG_PCI */
+}
+
+/* SPI support */
+
+/* chip select for SPI devices */
+#define SEEPROM1_CS 7 /* PIO7 */
+#define SEEPROM2_CS 0 /* IOC */
+#define SEEPROM3_CS 1 /* IOC */
+#define SRTC_CS 2 /* IOC */
+
+static int __init rbtx4938_ethaddr_init(void)
+{
+#ifdef CONFIG_PCI
+ unsigned char dat[17];
+ unsigned char sum;
+ int i;
+
+ /* 0-3: "MAC\0", 4-9:eth0, 10-15:eth1, 16:sum */
+ if (spi_eeprom_read(SEEPROM1_CS, 0, dat, sizeof(dat))) {
+ printk(KERN_ERR "seeprom: read error.\n");
+ return -ENODEV;
+ } else {
+ if (strcmp(dat, "MAC") != 0)
+ printk(KERN_WARNING "seeprom: bad signature.\n");
+ for (i = 0, sum = 0; i < sizeof(dat); i++)
+ sum += dat[i];
+ if (sum)
+ printk(KERN_WARNING "seeprom: bad checksum.\n");
+ }
+ for (i = 0; i < 2; i++) {
+ unsigned int id =
+ TXX9_IRQ_BASE + (i ? TX4938_IR_ETH1 : TX4938_IR_ETH0);
+ struct platform_device *pdev;
+ if (!(__raw_readq(&tx4938_ccfgptr->pcfg) &
+ (i ? TX4938_PCFG_ETH1_SEL : TX4938_PCFG_ETH0_SEL)))
+ continue;
+ pdev = platform_device_alloc("tc35815-mac", id);
+ if (!pdev ||
+ platform_device_add_data(pdev, &dat[4 + 6 * i], 6) ||
+ platform_device_add(pdev))
+ platform_device_put(pdev);
+ }
+#endif /* CONFIG_PCI */
+ return 0;
+}
+
+static void __init rbtx4938_spi_setup(void)
+{
+ /* set SPI_SEL */
+ txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_SPI_SEL);
+}
+
+static struct resource rbtx4938_fpga_resource;
+static struct resource tx4938_sdram_resource[4];
+static struct resource tx4938_sram_resource;
+
+void __init tx4938_board_setup(void)
+{
+ int i;
+ unsigned long divmode;
+ int cpuclk = 0;
+ unsigned long pcode = TX4938_REV_PCODE();
+
+ ioport_resource.start = 0;
+ ioport_resource.end = 0xffffffff;
+ iomem_resource.start = 0;
+ iomem_resource.end = 0xffffffff; /* expand to 4GB */
+
+ txx9_reg_res_init(pcode, TX4938_REG_BASE,
+ TX4938_REG_SIZE);
+ /* SDRAMC,EBUSC are configured by PROM */
+ for (i = 0; i < 8; i++) {
+ if (!(TX4938_EBUSC_CR(i) & 0x8))
+ continue; /* disabled */
+ txx9_ce_res[i].start = (unsigned long)TX4938_EBUSC_BA(i);
+ txx9_ce_res[i].end =
+ txx9_ce_res[i].start + TX4938_EBUSC_SIZE(i) - 1;
+ request_resource(&iomem_resource, &txx9_ce_res[i]);
+ }
+
+ /* clocks */
+ if (txx9_master_clock) {
+ u64 ccfg = ____raw_readq(&tx4938_ccfgptr->ccfg);
+ /* calculate gbus_clock and cpu_clock_freq from master_clock */
+ divmode = (__u32)ccfg & TX4938_CCFG_DIVMODE_MASK;
+ switch (divmode) {
+ case TX4938_CCFG_DIVMODE_8:
+ case TX4938_CCFG_DIVMODE_10:
+ case TX4938_CCFG_DIVMODE_12:
+ case TX4938_CCFG_DIVMODE_16:
+ case TX4938_CCFG_DIVMODE_18:
+ txx9_gbus_clock = txx9_master_clock * 4; break;
+ default:
+ txx9_gbus_clock = txx9_master_clock;
+ }
+ switch (divmode) {
+ case TX4938_CCFG_DIVMODE_2:
+ case TX4938_CCFG_DIVMODE_8:
+ cpuclk = txx9_gbus_clock * 2; break;
+ case TX4938_CCFG_DIVMODE_2_5:
+ case TX4938_CCFG_DIVMODE_10:
+ cpuclk = txx9_gbus_clock * 5 / 2; break;
+ case TX4938_CCFG_DIVMODE_3:
+ case TX4938_CCFG_DIVMODE_12:
+ cpuclk = txx9_gbus_clock * 3; break;
+ case TX4938_CCFG_DIVMODE_4:
+ case TX4938_CCFG_DIVMODE_16:
+ cpuclk = txx9_gbus_clock * 4; break;
+ case TX4938_CCFG_DIVMODE_4_5:
+ case TX4938_CCFG_DIVMODE_18:
+ cpuclk = txx9_gbus_clock * 9 / 2; break;
+ }
+ txx9_cpu_clock = cpuclk;
+ } else {
+ u64 ccfg = ____raw_readq(&tx4938_ccfgptr->ccfg);
+ if (txx9_cpu_clock == 0) {
+ txx9_cpu_clock = 300000000; /* 300MHz */
+ }
+ /* calculate gbus_clock and master_clock from cpu_clock_freq */
+ cpuclk = txx9_cpu_clock;
+ divmode = (__u32)ccfg & TX4938_CCFG_DIVMODE_MASK;
+ switch (divmode) {
+ case TX4938_CCFG_DIVMODE_2:
+ case TX4938_CCFG_DIVMODE_8:
+ txx9_gbus_clock = cpuclk / 2; break;
+ case TX4938_CCFG_DIVMODE_2_5:
+ case TX4938_CCFG_DIVMODE_10:
+ txx9_gbus_clock = cpuclk * 2 / 5; break;
+ case TX4938_CCFG_DIVMODE_3:
+ case TX4938_CCFG_DIVMODE_12:
+ txx9_gbus_clock = cpuclk / 3; break;
+ case TX4938_CCFG_DIVMODE_4:
+ case TX4938_CCFG_DIVMODE_16:
+ txx9_gbus_clock = cpuclk / 4; break;
+ case TX4938_CCFG_DIVMODE_4_5:
+ case TX4938_CCFG_DIVMODE_18:
+ txx9_gbus_clock = cpuclk * 2 / 9; break;
+ }
+ switch (divmode) {
+ case TX4938_CCFG_DIVMODE_8:
+ case TX4938_CCFG_DIVMODE_10:
+ case TX4938_CCFG_DIVMODE_12:
+ case TX4938_CCFG_DIVMODE_16:
+ case TX4938_CCFG_DIVMODE_18:
+ txx9_master_clock = txx9_gbus_clock / 4; break;
+ default:
+ txx9_master_clock = txx9_gbus_clock;
+ }
+ }
+ /* change default value to udelay/mdelay take reasonable time */
+ loops_per_jiffy = txx9_cpu_clock / HZ / 2;
+
+ /* CCFG */
+ /* clear WatchDogReset,BusErrorOnWrite flag (W1C) */
+ tx4938_ccfg_set(TX4938_CCFG_WDRST | TX4938_CCFG_BEOW);
+ /* do reset on watchdog */
+ tx4938_ccfg_set(TX4938_CCFG_WR);
+ /* clear PCIC1 reset */
+ txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
+
+ /* enable Timeout BusError */
+ if (tx4938_ccfg_toeon)
+ tx4938_ccfg_set(TX4938_CCFG_TOE);
+
+ /* DMA selection */
+ txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_DMASEL_ALL);
+
+ /* Use external clock for external arbiter */
+ if (!(____raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB))
+ txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_PCICLKEN_ALL);
+
+ printk(KERN_INFO "%s -- %dMHz(M%dMHz) CRIR:%08x CCFG:%llx PCFG:%llx\n",
+ txx9_pcode_str,
+ (cpuclk + 500000) / 1000000,
+ (txx9_master_clock + 500000) / 1000000,
+ (__u32)____raw_readq(&tx4938_ccfgptr->crir),
+ (unsigned long long)____raw_readq(&tx4938_ccfgptr->ccfg),
+ (unsigned long long)____raw_readq(&tx4938_ccfgptr->pcfg));
+
+ printk(KERN_INFO "%s SDRAMC --", txx9_pcode_str);
+ for (i = 0; i < 4; i++) {
+ unsigned long long cr = tx4938_sdramcptr->cr[i];
+ unsigned long ram_base, ram_size;
+ if (!((unsigned long)cr & 0x00000400))
+ continue; /* disabled */
+ ram_base = (unsigned long)(cr >> 49) << 21;
+ ram_size = ((unsigned long)(cr >> 33) + 1) << 21;
+ if (ram_base >= 0x20000000)
+ continue; /* high memory (ignore) */
+ printk(" CR%d:%016Lx", i, cr);
+ tx4938_sdram_resource[i].name = "SDRAM";
+ tx4938_sdram_resource[i].start = ram_base;
+ tx4938_sdram_resource[i].end = ram_base + ram_size - 1;
+ tx4938_sdram_resource[i].flags = IORESOURCE_MEM;
+ request_resource(&iomem_resource, &tx4938_sdram_resource[i]);
+ }
+ printk(" TR:%09Lx\n", tx4938_sdramcptr->tr);
+
+ /* SRAM */
+ if (tx4938_sramcptr->cr & 1) {
+ unsigned int size = 0x800;
+ unsigned long base =
+ (tx4938_sramcptr->cr >> (39-11)) & ~(size - 1);
+ tx4938_sram_resource.name = "SRAM";
+ tx4938_sram_resource.start = base;
+ tx4938_sram_resource.end = base + size - 1;
+ tx4938_sram_resource.flags = IORESOURCE_MEM;
+ request_resource(&iomem_resource, &tx4938_sram_resource);
+ }
+
+ /* TMR */
+ for (i = 0; i < TX4938_NR_TMR; i++)
+ txx9_tmr_init(TX4938_TMR_REG(i) & 0xfffffffffULL);
+
+ /* enable DMA */
+ for (i = 0; i < 2; i++)
+ ____raw_writeq(TX4938_DMA_MCR_MSTEN,
+ (void __iomem *)(TX4938_DMA_REG(i) + 0x50));
+
+ /* PIO */
+ __raw_writel(0, &tx4938_pioptr->maskcpu);
+ __raw_writel(0, &tx4938_pioptr->maskext);
+
+#ifdef CONFIG_PCI
+ txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
+#endif
+}
+
+static void __init rbtx4938_time_init(void)
+{
+ mips_hpt_frequency = txx9_cpu_clock / 2;
+ if (____raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_TINTDIS)
+ txx9_clockevent_init(TX4938_TMR_REG(0) & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4938_IR_TMR(0),
+ txx9_gbus_clock / 2);
+}
+
+static void __init rbtx4938_mem_setup(void)
+{
+ unsigned long long pcfg;
+ char *argptr;
+
+ iomem_resource.end = 0xffffffff; /* 4GB */
+
+ if (txx9_master_clock == 0)
+ txx9_master_clock = 25000000; /* 25MHz */
+ tx4938_board_setup();
+#ifndef CONFIG_PCI
+ set_io_port_base(RBTX4938_ETHER_BASE);
+#endif
+
+#ifdef CONFIG_SERIAL_TXX9
+ {
+ extern int early_serial_txx9_setup(struct uart_port *port);
+ int i;
+ struct uart_port req;
+ for(i = 0; i < 2; i++) {
+ memset(&req, 0, sizeof(req));
+ req.line = i;
+ req.iotype = UPIO_MEM;
+ req.membase = (char *)(0xff1ff300 + i * 0x100);
+ req.mapbase = 0xff1ff300 + i * 0x100;
+ req.irq = RBTX4938_IRQ_IRC_SIO(i);
+ req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
+ req.uartclk = 50000000;
+ early_serial_txx9_setup(&req);
+ }
+ }
+#ifdef CONFIG_SERIAL_TXX9_CONSOLE
+ argptr = prom_getcmdline();
+ if (strstr(argptr, "console=") == NULL) {
+ strcat(argptr, " console=ttyS0,38400");
+ }
+#endif
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_PIO58_61
+ printk("PIOSEL: disabling both ata and nand selection\n");
+ local_irq_disable();
+ txx9_clear64(&tx4938_ccfgptr->pcfg,
+ TX4938_PCFG_NDF_SEL | TX4938_PCFG_ATA_SEL);
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_NAND
+ printk("PIOSEL: enabling nand selection\n");
+ txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
+ txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_ATA
+ printk("PIOSEL: enabling ata selection\n");
+ txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
+ txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
+#endif
+
+#ifdef CONFIG_IP_PNP
+ argptr = prom_getcmdline();
+ if (strstr(argptr, "ip=") == NULL) {
+ strcat(argptr, " ip=any");
+ }
+#endif
+
+
+#ifdef CONFIG_FB
+ {
+ conswitchp = &dummy_con;
+ }
+#endif
+
+ rbtx4938_spi_setup();
+ pcfg = ____raw_readq(&tx4938_ccfgptr->pcfg); /* updated */
+ /* fixup piosel */
+ if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
+ TX4938_PCFG_ATA_SEL)
+ writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x04,
+ rbtx4938_piosel_addr);
+ else if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
+ TX4938_PCFG_NDF_SEL)
+ writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x08,
+ rbtx4938_piosel_addr);
+ else
+ writeb(readb(rbtx4938_piosel_addr) & ~(0x08 | 0x04),
+ rbtx4938_piosel_addr);
+
+ rbtx4938_fpga_resource.name = "FPGA Registers";
+ rbtx4938_fpga_resource.start = CPHYSADDR(RBTX4938_FPGA_REG_ADDR);
+ rbtx4938_fpga_resource.end = CPHYSADDR(RBTX4938_FPGA_REG_ADDR) + 0xffff;
+ rbtx4938_fpga_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ if (request_resource(&iomem_resource, &rbtx4938_fpga_resource))
+ printk("request resource for fpga failed\n");
+
+ _machine_restart = rbtx4938_machine_restart;
+ _machine_halt = rbtx4938_machine_halt;
+ pm_power_off = rbtx4938_machine_power_off;
+
+ writeb(0xff, rbtx4938_led_addr);
+ printk(KERN_INFO "RBTX4938 --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
+ readb(rbtx4938_fpga_rev_addr),
+ readb(rbtx4938_dipsw_addr), readb(rbtx4938_bdipsw_addr));
+}
+
+static int __init rbtx4938_ne_init(void)
+{
+ struct resource res[] = {
+ {
+ .start = RBTX4938_RTL_8019_BASE,
+ .end = RBTX4938_RTL_8019_BASE + 0x20 - 1,
+ .flags = IORESOURCE_IO,
+ }, {
+ .start = RBTX4938_RTL_8019_IRQ,
+ .flags = IORESOURCE_IRQ,
+ }
+ };
+ struct platform_device *dev =
+ platform_device_register_simple("ne", -1,
+ res, ARRAY_SIZE(res));
+ return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+}
+
+/* GPIO support */
+
+int gpio_to_irq(unsigned gpio)
+{
+ return -EINVAL;
+}
+
+int irq_to_gpio(unsigned irq)
+{
+ return -EINVAL;
+}
+
+static DEFINE_SPINLOCK(rbtx4938_spi_gpio_lock);
+
+static void rbtx4938_spi_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int value)
+{
+ u8 val;
+ unsigned long flags;
+ spin_lock_irqsave(&rbtx4938_spi_gpio_lock, flags);
+ val = readb(rbtx4938_spics_addr);
+ if (value)
+ val |= 1 << offset;
+ else
+ val &= ~(1 << offset);
+ writeb(val, rbtx4938_spics_addr);
+ mmiowb();
+ spin_unlock_irqrestore(&rbtx4938_spi_gpio_lock, flags);
+}
+
+static int rbtx4938_spi_gpio_dir_out(struct gpio_chip *chip,
+ unsigned int offset, int value)
+{
+ rbtx4938_spi_gpio_set(chip, offset, value);
+ return 0;
+}
+
+static struct gpio_chip rbtx4938_spi_gpio_chip = {
+ .set = rbtx4938_spi_gpio_set,
+ .direction_output = rbtx4938_spi_gpio_dir_out,
+ .label = "RBTX4938-SPICS",
+ .base = 16,
+ .ngpio = 3,
+};
+
+/* SPI support */
+
+static void __init txx9_spi_init(unsigned long base, int irq)
+{
+ struct resource res[] = {
+ {
+ .start = base,
+ .end = base + 0x20 - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = irq,
+ .flags = IORESOURCE_IRQ,
+ },
+ };
+ platform_device_register_simple("spi_txx9", 0,
+ res, ARRAY_SIZE(res));
+}
+
+static int __init rbtx4938_spi_init(void)
+{
+ struct spi_board_info srtc_info = {
+ .modalias = "rtc-rs5c348",
+ .max_speed_hz = 1000000, /* 1.0Mbps @ Vdd 2.0V */
+ .bus_num = 0,
+ .chip_select = 16 + SRTC_CS,
+ /* Mode 1 (High-Active, Shift-Then-Sample), High Avtive CS */
+ .mode = SPI_MODE_1 | SPI_CS_HIGH,
+ };
+ spi_register_board_info(&srtc_info, 1);
+ spi_eeprom_register(SEEPROM1_CS);
+ spi_eeprom_register(16 + SEEPROM2_CS);
+ spi_eeprom_register(16 + SEEPROM3_CS);
+ gpio_request(16 + SRTC_CS, "rtc-rs5c348");
+ gpio_direction_output(16 + SRTC_CS, 0);
+ gpio_request(SEEPROM1_CS, "seeprom1");
+ gpio_direction_output(SEEPROM1_CS, 1);
+ gpio_request(16 + SEEPROM2_CS, "seeprom2");
+ gpio_direction_output(16 + SEEPROM2_CS, 1);
+ gpio_request(16 + SEEPROM3_CS, "seeprom3");
+ gpio_direction_output(16 + SEEPROM3_CS, 1);
+ txx9_spi_init(TX4938_SPI_REG & 0xfffffffffULL, RBTX4938_IRQ_IRC_SPI);
+ return 0;
+}
+
+static void __init rbtx4938_arch_init(void)
+{
+ txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, 0, 16);
+ gpiochip_add(&rbtx4938_spi_gpio_chip);
+ rbtx4938_pci_setup();
+ rbtx4938_spi_init();
+}
+
+/* Watchdog support */
+
+static int __init txx9_wdt_init(unsigned long base)
+{
+ struct resource res = {
+ .start = base,
+ .end = base + 0x100 - 1,
+ .flags = IORESOURCE_MEM,
+ };
+ struct platform_device *dev =
+ platform_device_register_simple("txx9wdt", -1, &res, 1);
+ return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+}
+
+static int __init rbtx4938_wdt_init(void)
+{
+ return txx9_wdt_init(TX4938_TMR_REG(2) & 0xfffffffffULL);
+}
+
+static void __init rbtx4938_device_init(void)
+{
+ rbtx4938_ethaddr_init();
+ rbtx4938_ne_init();
+ rbtx4938_wdt_init();
+}
+
+struct txx9_board_vec rbtx4938_vec __initdata = {
+ .system = "Toshiba RBTX4938",
+ .prom_init = rbtx4938_prom_init,
+ .mem_setup = rbtx4938_mem_setup,
+ .irq_setup = rbtx4938_irq_setup,
+ .time_init = rbtx4938_time_init,
+ .device_init = rbtx4938_device_init,
+ .arch_init = rbtx4938_arch_init,
+#ifdef CONFIG_PCI
+ .pci_map_irq = rbtx4938_pci_map_irq,
+#endif
+};
diff --git a/arch/mips/txx9/rbtx4938/spi_eeprom.c b/arch/mips/txx9/rbtx4938/spi_eeprom.c
new file mode 100644
index 00000000000..a7ea8b041c1
--- /dev/null
+++ b/arch/mips/txx9/rbtx4938/spi_eeprom.c
@@ -0,0 +1,99 @@
+/*
+ * spi_eeprom.c
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
+ */
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/eeprom.h>
+#include <asm/txx9/spi.h>
+
+#define AT250X0_PAGE_SIZE 8
+
+/* register board information for at25 driver */
+int __init spi_eeprom_register(int chipid)
+{
+ static struct spi_eeprom eeprom = {
+ .name = "at250x0",
+ .byte_len = 128,
+ .page_size = AT250X0_PAGE_SIZE,
+ .flags = EE_ADDR1,
+ };
+ struct spi_board_info info = {
+ .modalias = "at25",
+ .max_speed_hz = 1500000, /* 1.5Mbps */
+ .bus_num = 0,
+ .chip_select = chipid,
+ .platform_data = &eeprom,
+ /* Mode 0: High-Active, Sample-Then-Shift */
+ };
+
+ return spi_register_board_info(&info, 1);
+}
+
+/* simple temporary spi driver to provide early access to seeprom. */
+
+static struct read_param {
+ int chipid;
+ int address;
+ unsigned char *buf;
+ int len;
+} *read_param;
+
+static int __init early_seeprom_probe(struct spi_device *spi)
+{
+ int stat = 0;
+ u8 cmd[2];
+ int len = read_param->len;
+ char *buf = read_param->buf;
+ int address = read_param->address;
+
+ dev_info(&spi->dev, "spiclk %u KHz.\n",
+ (spi->max_speed_hz + 500) / 1000);
+ if (read_param->chipid != spi->chip_select)
+ return -ENODEV;
+ while (len > 0) {
+ /* spi_write_then_read can only work with small chunk */
+ int c = len < AT250X0_PAGE_SIZE ? len : AT250X0_PAGE_SIZE;
+ cmd[0] = 0x03; /* AT25_READ */
+ cmd[1] = address;
+ stat = spi_write_then_read(spi, cmd, sizeof(cmd), buf, c);
+ buf += c;
+ len -= c;
+ address += c;
+ }
+ return stat;
+}
+
+static struct spi_driver early_seeprom_driver __initdata = {
+ .driver = {
+ .name = "at25",
+ .owner = THIS_MODULE,
+ },
+ .probe = early_seeprom_probe,
+};
+
+int __init spi_eeprom_read(int chipid, int address,
+ unsigned char *buf, int len)
+{
+ int ret;
+ struct read_param param = {
+ .chipid = chipid,
+ .address = address,
+ .buf = buf,
+ .len = len
+ };
+
+ read_param = &param;
+ ret = spi_register_driver(&early_seeprom_driver);
+ if (!ret)
+ spi_unregister_driver(&early_seeprom_driver);
+ return ret;
+}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-18 16:39:20 +0000