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linux/arch/ppc/platforms/4xx/ash.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
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!
2005-04-16 15:20:36 -07:00

251 lines
7.6 KiB
C
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/*
* arch/ppc/platforms/4xx/ash.c
*
* Support for the IBM NP405H ash eval board
*
* Author: Armin Kuster <akuster@mvista.com>
*
* 2001-2002 (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/pagemap.h>
#include <linux/pci.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/io.h>
#include <asm/ocp.h>
#include <asm/ibm_ocp_pci.h>
#include <asm/todc.h>
#ifdef DEBUG
#define DBG(x...) printk(x)
#else
#define DBG(x...)
#endif
void *ash_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
*/
{
{24, 24, 24, 24}, /* IDSEL 1 - PCI slot 1 */
{25, 25, 25, 25}, /* IDSEL 2 - PCI slot 2 */
{26, 26, 26, 26}, /* IDSEL 3 - PCI slot 3 */
{27, 27, 27, 27}, /* IDSEL 4 - PCI slot 4 */
};
const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
}
void __init
ash_setup_arch(void)
{
ppc4xx_setup_arch();
ibm_ocp_set_emac(0, 3);
#ifdef CONFIG_DEBUG_BRINGUP
int i;
printk("\n");
printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
printk("\n");
printk("bi_s_version\t %s\n", bip->bi_s_version);
printk("bi_r_version\t %s\n", bip->bi_r_version);
printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
bip->bi_memsize / (1024 * 1000));
for (i = 0; i < EMAC_NUMS; i++) {
printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", i,
bip->bi_enetaddr[i][0], bip->bi_enetaddr[i][1],
bip->bi_enetaddr[i][2], bip->bi_enetaddr[i][3],
bip->bi_enetaddr[i][4], bip->bi_enetaddr[i][5]);
}
printk("bi_pci_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
bip->bi_pci_enetaddr[0], bip->bi_pci_enetaddr[1],
bip->bi_pci_enetaddr[2], bip->bi_pci_enetaddr[3],
bip->bi_pci_enetaddr[4], bip->bi_pci_enetaddr[5]);
printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
bip->bi_intfreq, bip->bi_intfreq / 1000000);
printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
bip->bi_busfreq, bip->bi_busfreq / 1000000);
printk("bi_pci_busfreq\t 0x%8.8x\t pci bus clock:\t %dMHz\n",
bip->bi_pci_busfreq, bip->bi_pci_busfreq / 1000000);
printk("\n");
#endif
/* RTC step for ash */
ash_rtc_base = (void *) ASH_RTC_VADDR;
TODC_INIT(TODC_TYPE_DS1743, ash_rtc_base, ash_rtc_base, ash_rtc_base,
8);
}
void __init
bios_fixup(struct pci_controller *hose, struct pcil0_regs *pcip)
{
/*
* 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 <= 2; i++) {
printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma)));
printk(" pmm%dla\t0x%x\n", i, in_le32(&(pcip->pmm[i].la)));
printk(" pmm%dpcila\t0x%x\n", i,
in_le32(&(pcip->pmm[i].pcila)));
printk(" pmm%dpciha\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)));
for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) {
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);
}
#endif
if (ppc_md.progress)
ppc_md.progress("bios_fixup(): enter", 0x800);
/* 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);
/* 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);
/* Enable PTM1 and PTM2, mapped to PLB address 0. */
out_le32((void *) &(pcip->ptm1la), 0x00000000);
out_le32((void *) &(pcip->ptm1ms), 0x00000001);
out_le32((void *) &(pcip->ptm2la), 0x00000000);
out_le32((void *) &(pcip->ptm2ms), 0x00000001);
/* Write zero to PTM1 BAR. */
early_write_config_dword(hose, hose->first_busno,
PCI_FUNC(hose->first_busno),
PCI_BASE_ADDRESS_1,
0x00000000);
/* Disable PTM2 (unused) */
out_le32((void *) &(pcip->ptm2la), 0x00000000);
out_le32((void *) &(pcip->ptm2ms), 0x00000000);
/* end work arround */
if (ppc_md.progress)
ppc_md.progress("bios_fixup(): done", 0x800);
#ifdef DEBUG
printk("PCI bridge regs after fixup \n");
for (i = 0; i <= 2; i++) {
printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma)));
printk(" pmm%dla\t0x%x\n", i, in_le32(&(pcip->pmm[i].la)));
printk(" pmm%dpcila\t0x%x\n", i,
in_le32(&(pcip->pmm[i].pcila)));
printk(" pmm%dpciha\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)));
for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) {
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);
}
#endif
}
void __init
ash_map_io(void)
{
ppc4xx_map_io();
io_block_mapping(ASH_RTC_VADDR, ASH_RTC_PADDR, ASH_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 = ash_setup_arch;
ppc_md.setup_io_mappings = ash_map_io;
#ifdef CONFIG_PPC_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
}
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