patch-2.4.20 linux-2.4.20/arch/ppc/platforms/spruce_setup.c

• 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
+}