patch-2.4.20 linux-2.4.20/arch/ppc/platforms/spruce_setup.c
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- Lines: 328
- Date:
Thu Nov 28 15:53:11 2002
- Orig file:
linux-2.4.19/arch/ppc/platforms/spruce_setup.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.19/arch/ppc/platforms/spruce_setup.c linux-2.4.20/arch/ppc/platforms/spruce_setup.c
@@ -0,0 +1,327 @@
+/*
+ * arch/ppc/platforms/spruce_setup.c
+ *
+ * Board setup routines for IBM Spruce
+ *
+ * Authors: Johnnie Peters <jpeters@mvista.com>
+ * Matt Porter <mporter@mvista.com>
+ *
+ * Copyright 2001-2002 MontaVista Software Inc.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#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/types.h>
+#include <linux/major.h>
+#include <linux/blk.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/ide.h>
+#include <linux/serial.h>
+
+#include <asm/keyboard.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/time.h>
+#include <platforms/spruce.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+
+#include "cpc700.h"
+
+extern void spruce_init_IRQ(void);
+extern int spruce_get_irq(struct pt_regs *);
+extern void spruce_setup_hose(void);
+
+extern int pckbd_setkeycode(unsigned int, unsigned int);
+extern int pckbd_getkeycode(unsigned int);
+extern int pckbd_translate(unsigned char, unsigned char *, char);
+extern char pckbd_unexpected_up(unsigned char);
+extern void pckbd_leds(unsigned char);
+extern void pckbd_init_hw(void);
+extern unsigned char pckbd_sysrq_xlate[128];
+extern char cmd_line[];
+
+/*
+ * CPC700 PIC interrupt programming table
+ *
+ * First entry is the sensitivity (level/edge), second is the polarity.
+ */
+unsigned int cpc700_irq_assigns[32][2] = {
+ { 1, 1 }, /* IRQ 0: ECC Correctable Error - rising edge */
+ { 1, 1 }, /* IRQ 1: PCI Write Mem Range - rising edge */
+ { 0, 1 }, /* IRQ 2: PCI Write Command Reg - active high */
+ { 0, 1 }, /* IRQ 3: UART 0 - active high */
+ { 0, 1 }, /* IRQ 4: UART 1 - active high */
+ { 0, 1 }, /* IRQ 5: ICC 0 - active high */
+ { 0, 1 }, /* IRQ 6: ICC 1 - active high */
+ { 0, 1 }, /* IRQ 7: GPT Compare 0 - active high */
+ { 0, 1 }, /* IRQ 8: GPT Compare 1 - active high */
+ { 0, 1 }, /* IRQ 9: GPT Compare 2 - active high */
+ { 0, 1 }, /* IRQ 10: GPT Compare 3 - active high */
+ { 0, 1 }, /* IRQ 11: GPT Compare 4 - active high */
+ { 0, 1 }, /* IRQ 12: GPT Capture 0 - active high */
+ { 0, 1 }, /* IRQ 13: GPT Capture 1 - active high */
+ { 0, 1 }, /* IRQ 14: GPT Capture 2 - active high */
+ { 0, 1 }, /* IRQ 15: GPT Capture 3 - active high */
+ { 0, 1 }, /* IRQ 16: GPT Capture 4 - active high */
+ { 0, 0 }, /* IRQ 17: Reserved */
+ { 0, 0 }, /* IRQ 18: Reserved */
+ { 0, 0 }, /* IRQ 19: Reserved */
+ { 0, 1 }, /* IRQ 20: FPGA EXT_IRQ0 - active high */
+ { 1, 1 }, /* IRQ 21: Mouse - rising edge */
+ { 1, 1 }, /* IRQ 22: Keyboard - rising edge */
+ { 0, 0 }, /* IRQ 23: PCI Slot 3 - active low */
+ { 0, 0 }, /* IRQ 24: PCI Slot 2 - active low */
+ { 0, 0 }, /* IRQ 25: PCI Slot 1 - active low */
+ { 0, 0 }, /* IRQ 26: PCI Slot 0 - active low */
+};
+
+static void __init
+spruce_calibrate_decr(void)
+{
+ int freq, divisor = 4;
+
+ /* determine processor bus speed */
+ freq = SPRUCE_BUS_SPEED;
+ tb_ticks_per_jiffy = freq / HZ / divisor;
+ tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
+}
+
+static int
+spruce_show_cpuinfo(struct seq_file *m)
+{
+ seq_printf(m, "vendor\t\t: IBM\n");
+ seq_printf(m, "machine\t\t: Spruce\n");
+
+ return 0;
+}
+
+TODC_ALLOC();
+
+static void __init
+spruce_setup_arch(void)
+{
+ u32 baud_base;
+ struct serial_struct serial_req;
+
+ /* Setup TODC access */
+ TODC_INIT(TODC_TYPE_DS1643, 0, 0, SPRUCE_RTC_BASE_ADDR, 8);
+
+ /* init to some ~sane value until calibrate_delay() runs */
+ loops_per_jiffy = 50000000 / HZ;
+
+ /* Setup PCI host bridge */
+ spruce_setup_hose();
+
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (initrd_start)
+ ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0); /* /dev/ram */
+ else
+#endif
+#ifdef CONFIG_ROOT_NFS
+ ROOT_DEV = to_kdev_t(0x00FF); /* /dev/nfs pseudo device */
+#else
+ ROOT_DEV = to_kdev_t(0x0801); /* /dev/sda1 */
+#endif
+
+#ifdef CONFIG_DUMMY_CONSOLE
+ conswitchp = &dummy_con;
+#endif
+
+ if (SPRUCE_UARTCLK_IS_33M(readb(SPRUCE_FPGA_REG_A)))
+ baud_base = SPRUCE_BAUD_33M;
+ else
+ baud_base = SPRUCE_BAUD_30M;
+
+ /* Setup serial port access */
+ memset(&serial_req, 0, sizeof(serial_req));
+ serial_req.baud_base = baud_base;
+ serial_req.line = 0;
+ serial_req.port = 0;
+ serial_req.irq = 3;
+ serial_req.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+ serial_req.io_type = SERIAL_IO_MEM;
+ serial_req.iomem_base = UART0_IO_BASE;
+ serial_req.iomem_reg_shift = 0;
+
+ if (early_serial_setup(&serial_req) != 0) {
+ printk("Early serial init of port 0 failed\n");
+ }
+
+ /* Assume early_serial_setup() doesn't modify serial_req */
+ serial_req.line = 1;
+ serial_req.port = 1;
+ serial_req.irq = 4;
+ serial_req.iomem_base = UART1_IO_BASE;
+
+ if (early_serial_setup(&serial_req) != 0) {
+ printk("Early serial init of port 1 failed\n");
+ }
+
+ /* Identify the system */
+ printk("System Identification: IBM Spruce\n");
+ printk("IBM Spruce port (C) 2001 MontaVista Software, Inc. (source@mvista.com)\n");
+}
+
+static void
+spruce_restart(char *cmd)
+{
+ __cli();
+
+ /* SRR0 has system reset vector, SRR1 has default MSR value */
+ /* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */
+ __asm__ __volatile__
+ ("\n\
+ lis 3,0xfff0
+ ori 3,3,0x0100
+ mtspr 26,3
+ li 3,0
+ mtspr 27,3
+ rfi
+ ");
+ for(;;);
+}
+
+static void
+spruce_power_off(void)
+{
+ for(;;);
+}
+
+static void
+spruce_halt(void)
+{
+ spruce_restart(NULL);
+}
+
+static unsigned long __init
+spruce_find_end_of_memory(void)
+{
+ return boot_mem_size;
+}
+
+static void __init
+spruce_map_io(void)
+{
+ io_block_mapping(SPRUCE_PCI_IO_BASE, SPRUCE_PCI_PHY_IO_BASE,
+ 0x08000000, _PAGE_IO);
+}
+
+unsigned char spruce_read_keyb_status(void)
+{
+ unsigned long kbd_status;
+
+ __raw_writel(0x00000088, 0xff500008);
+ eieio();
+
+ __raw_writel(0x03000000, 0xff50000c);
+ eieio();
+
+ asm volatile(" lis 7,0xff88 \n
+ ori 7,7,0x8 \n
+ lswi 6,7,0x8 \n
+ mr %0,6 \n"
+ : "=r" (kbd_status) :: "6", "7");
+
+ __raw_writel(0x00000000, 0xff50000c);
+ eieio();
+
+ return (unsigned char)(kbd_status >> 24);
+}
+
+unsigned char spruce_read_keyb_data(void)
+{
+ unsigned long kbd_data;
+
+ __raw_writel(0x00000088, 0xff500008);
+ eieio();
+
+ __raw_writel(0x03000000, 0xff50000c);
+ eieio();
+
+ asm volatile(" lis 7,0xff88 \n
+ lswi 6,7,0x8 \n
+ mr %0,6 \n"
+ : "=r" (kbd_data) :: "6", "7");
+
+ __raw_writel(0x00000000, 0xff50000c);
+ eieio();
+
+ return (unsigned char)(kbd_data >> 24);
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7)
+{
+ parse_bootinfo(find_bootinfo());
+
+ isa_io_base = SPRUCE_ISA_IO_BASE;
+ pci_dram_offset = SPRUCE_PCI_SYS_MEM_BASE;
+
+ ppc_md.setup_arch = spruce_setup_arch;
+ ppc_md.show_cpuinfo = spruce_show_cpuinfo;
+ ppc_md.init_IRQ = cpc700_init_IRQ;
+ ppc_md.get_irq = cpc700_get_irq;
+
+ ppc_md.find_end_of_memory = spruce_find_end_of_memory;
+ ppc_md.setup_io_mappings = spruce_map_io;
+
+ ppc_md.restart = spruce_restart;
+ ppc_md.power_off = spruce_power_off;
+ ppc_md.halt = spruce_halt;
+
+ 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.calibrate_decr = spruce_calibrate_decr;
+
+ ppc_md.nvram_read_val = todc_direct_read_val;
+ ppc_md.nvram_write_val = todc_direct_write_val;
+
+#ifdef CONFIG_VT
+ /* Spruce has a PS2 style keyboard */
+ ppc_md.kbd_setkeycode = pckbd_setkeycode;
+ ppc_md.kbd_getkeycode = pckbd_getkeycode;
+ ppc_md.kbd_translate = pckbd_translate;
+ ppc_md.kbd_unexpected_up = pckbd_unexpected_up;
+ ppc_md.kbd_leds = pckbd_leds;
+ ppc_md.kbd_init_hw = pckbd_init_hw;
+#ifdef CONFIG_MAGIC_SYSRQ
+ ppc_md.kbd_sysrq_xlate = pckbd_sysrq_xlate;
+ SYSRQ_KEY = 0x54;
+#endif
+#endif
+}
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