1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
279 lines
8.1 KiB
C
279 lines
8.1 KiB
C
/*
|
|
* arch/ppc/platforms/4xx/sycamore.c
|
|
*
|
|
* Architecture- / platform-specific boot-time initialization code for
|
|
* IBM PowerPC 4xx based boards.
|
|
*
|
|
* Author: Armin Kuster <akuster@mvista.com>
|
|
*
|
|
* 2000-2002 (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/config.h>
|
|
#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/ocp.h>
|
|
#include <asm/ppc4xx_pic.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/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 *sycamore_rtc_base;
|
|
|
|
/*
|
|
* Define external IRQ senses and polarities.
|
|
*/
|
|
unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 7 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 8 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 9 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 10 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 11 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 12 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 0 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 1 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 2 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 3 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 4 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 5 */
|
|
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 6 */
|
|
};
|
|
|
|
|
|
/* Some IRQs unique to Sycamore.
|
|
* 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
|
|
sycamore_setup_arch(void)
|
|
{
|
|
#define SYCAMORE_PS2_BASE 0xF0100000
|
|
#define SYCAMORE_FPGA_BASE 0xF0300000
|
|
|
|
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, 1);
|
|
|
|
kb_data = ioremap(SYCAMORE_PS2_BASE, 8);
|
|
if (!kb_data) {
|
|
printk(KERN_CRIT
|
|
"sycamore_setup_arch() kb_data ioremap failed\n");
|
|
return;
|
|
}
|
|
|
|
kb_cs = kb_data + 1;
|
|
|
|
fpga_status = ioremap(SYCAMORE_FPGA_BASE, 8);
|
|
if (!fpga_status) {
|
|
printk(KERN_CRIT
|
|
"sycamore_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 sycamore */
|
|
sycamore_rtc_base = (void *) SYCAMORE_RTC_VADDR;
|
|
TODC_INIT(TODC_TYPE_DS1743, sycamore_rtc_base, sycamore_rtc_base,
|
|
sycamore_rtc_base, 8);
|
|
|
|
/* Identify the system */
|
|
printk(KERN_INFO "IBM Sycamore (IBM405GPr) Platform\n");
|
|
printk(KERN_INFO
|
|
"Port by 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));
|
|
|
|
/* Enable inbound region one - 1GB size */
|
|
out_le32((void *) &(pcip->ptm1ms), 0xc0000001);
|
|
|
|
/* Disable outbound 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);
|
|
|
|
/* Disable inbound region two */
|
|
out_le32((void *) &(pcip->ptm2ms), 0x00000000);
|
|
|
|
/* Disable outbound 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);
|
|
|
|
/* 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 arround */
|
|
|
|
#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
|
|
sycamore_map_io(void)
|
|
{
|
|
ppc4xx_map_io();
|
|
io_block_mapping(SYCAMORE_RTC_VADDR,
|
|
SYCAMORE_RTC_PADDR, SYCAMORE_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 = sycamore_setup_arch;
|
|
ppc_md.setup_io_mappings = sycamore_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
|
|
}
|