+++ /dev/null
-/*
- * Architecture- / platform-specific boot-time initialization code for
- * IBM PowerPC 4xx based boards. Adapted from original
- * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
- * <dan@net4x.com>.
- *
- * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
- *
- * 2002 (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.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/threads.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/rtc.h>
-
-#include <asm/system.h>
-#include <asm/pci-bridge.h>
-#include <asm/machdep.h>
-#include <asm/page.h>
-#include <asm/time.h>
-#include <asm/io.h>
-#include <asm/ocp.h>
-#include <asm/ibm_ocp_pci.h>
-#include <asm/todc.h>
-
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-void *kb_cs;
-void *kb_data;
-void *walnut_rtc_base;
-
-/* Some IRQs unique to Walnut.
- * Used by the generic 405 PCI setup functions in ppc4xx_pci.c
- */
-int __init
-ppc405_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
-{
- static char pci_irq_table[][4] =
- /*
- * PCI IDSEL/INTPIN->INTLINE
- * A B C D
- */
- {
- {28, 28, 28, 28}, /* IDSEL 1 - PCI slot 1 */
- {29, 29, 29, 29}, /* IDSEL 2 - PCI slot 2 */
- {30, 30, 30, 30}, /* IDSEL 3 - PCI slot 3 */
- {31, 31, 31, 31}, /* IDSEL 4 - PCI slot 4 */
- };
-
- const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
- return PCI_IRQ_TABLE_LOOKUP;
-};
-
-void __init
-walnut_setup_arch(void)
-{
-
- void *fpga_brdc;
- unsigned char fpga_brdc_data;
- void *fpga_enable;
- void *fpga_polarity;
- void *fpga_status;
- void *fpga_trigger;
-
- ppc4xx_setup_arch();
-
- ibm_ocp_set_emac(0, 0);
-
- kb_data = ioremap(WALNUT_PS2_BASE, 8);
- if (!kb_data) {
- printk(KERN_CRIT
- "walnut_setup_arch() kb_data ioremap failed\n");
- return;
- }
-
- kb_cs = kb_data + 1;
-
- fpga_status = ioremap(PPC40x_FPGA_BASE, 8);
- if (!fpga_status) {
- printk(KERN_CRIT
- "walnut_setup_arch() fpga_status ioremap failed\n");
- return;
- }
-
- fpga_enable = fpga_status + 1;
- fpga_polarity = fpga_status + 2;
- fpga_trigger = fpga_status + 3;
- fpga_brdc = fpga_status + 4;
-
- /* split the keyboard and mouse interrupts */
- fpga_brdc_data = readb(fpga_brdc);
- fpga_brdc_data |= 0x80;
- writeb(fpga_brdc_data, fpga_brdc);
-
- writeb(0x3, fpga_enable);
-
- writeb(0x3, fpga_polarity);
-
- writeb(0x3, fpga_trigger);
-
- /* RTC step for the walnut */
- walnut_rtc_base = (void *) WALNUT_RTC_VADDR;
- TODC_INIT(TODC_TYPE_DS1743, walnut_rtc_base, walnut_rtc_base,
- walnut_rtc_base, 8);
- /* Identify the system */
- printk("IBM Walnut port (C) 2000-2002 MontaVista Software, Inc. (source@mvista.com)\n");
-}
-
-void __init
-bios_fixup(struct pci_controller *hose, struct pcil0_regs *pcip)
-{
-#ifdef CONFIG_PCI
- unsigned int bar_response, bar;
- /*
- * Expected PCI mapping:
- *
- * PLB addr PCI memory addr
- * --------------------- ---------------------
- * 0000'0000 - 7fff'ffff <--- 0000'0000 - 7fff'ffff
- * 8000'0000 - Bfff'ffff ---> 8000'0000 - Bfff'ffff
- *
- * PLB addr PCI io addr
- * --------------------- ---------------------
- * e800'0000 - e800'ffff ---> 0000'0000 - 0001'0000
- *
- * The following code is simplified by assuming that the bootrom
- * has been well behaved in following this mapping.
- */
-
-#ifdef DEBUG
- int i;
-
- printk("ioremap PCLIO_BASE = 0x%x\n", pcip);
- printk("PCI bridge regs before fixup \n");
- for (i = 0; i <= 3; i++) {
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma)));
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].la)));
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pcila)));
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pciha)));
- }
- printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms)));
- printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la)));
- printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms)));
- printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la)));
-
-#endif
-
- /* added for IBM boot rom version 1.15 bios bar changes -AK */
-
- /* Disable region first */
- out_le32((void *) &(pcip->pmm[0].ma), 0x00000000);
- /* PLB starting addr, PCI: 0x80000000 */
- out_le32((void *) &(pcip->pmm[0].la), 0x80000000);
- /* PCI start addr, 0x80000000 */
- out_le32((void *) &(pcip->pmm[0].pcila), PPC405_PCI_MEM_BASE);
- /* 512MB range of PLB to PCI */
- out_le32((void *) &(pcip->pmm[0].pciha), 0x00000000);
- /* Enable no pre-fetch, enable region */
- out_le32((void *) &(pcip->pmm[0].ma), ((0xffffffff -
- (PPC405_PCI_UPPER_MEM -
- PPC405_PCI_MEM_BASE)) | 0x01));
-
- /* Disable region one */
- out_le32((void *) &(pcip->pmm[1].ma), 0x00000000);
- out_le32((void *) &(pcip->pmm[1].la), 0x00000000);
- out_le32((void *) &(pcip->pmm[1].pcila), 0x00000000);
- out_le32((void *) &(pcip->pmm[1].pciha), 0x00000000);
- out_le32((void *) &(pcip->pmm[1].ma), 0x00000000);
- out_le32((void *) &(pcip->ptm1ms), 0x00000000);
-
- /* Disable region two */
- out_le32((void *) &(pcip->pmm[2].ma), 0x00000000);
- out_le32((void *) &(pcip->pmm[2].la), 0x00000000);
- out_le32((void *) &(pcip->pmm[2].pcila), 0x00000000);
- out_le32((void *) &(pcip->pmm[2].pciha), 0x00000000);
- out_le32((void *) &(pcip->pmm[2].ma), 0x00000000);
- out_le32((void *) &(pcip->ptm2ms), 0x00000000);
-
- /* Zero config bars */
- for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) {
- early_write_config_dword(hose, hose->first_busno,
- PCI_FUNC(hose->first_busno), bar,
- 0x00000000);
- early_read_config_dword(hose, hose->first_busno,
- PCI_FUNC(hose->first_busno), bar,
- &bar_response);
- DBG("BUS %d, device %d, Function %d bar 0x%8.8x is 0x%8.8x\n",
- hose->first_busno, PCI_SLOT(hose->first_busno),
- PCI_FUNC(hose->first_busno), bar, bar_response);
- }
- /* end work around */
-
-#ifdef DEBUG
- printk("PCI bridge regs after fixup \n");
- for (i = 0; i <= 3; i++) {
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma)));
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].la)));
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pcila)));
- printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pciha)));
- }
- printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms)));
- printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la)));
- printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms)));
- printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la)));
-
-#endif
-#endif
-}
-
-void __init
-walnut_map_io(void)
-{
- ppc4xx_map_io();
- io_block_mapping(WALNUT_RTC_VADDR,
- WALNUT_RTC_PADDR, WALNUT_RTC_SIZE, _PAGE_IO);
-}
-
-void __init
-platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
- ppc4xx_init(r3, r4, r5, r6, r7);
-
- ppc_md.setup_arch = walnut_setup_arch;
- ppc_md.setup_io_mappings = walnut_map_io;
-
-#ifdef CONFIG_GEN_RTC
- 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.nvram_read_val = todc_direct_read_val;
- ppc_md.nvram_write_val = todc_direct_write_val;
-#endif
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff