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Diffstat (limited to 'cpu/mpc512x/pci.c')
-rw-r--r--cpu/mpc512x/pci.c71
1 files changed, 44 insertions, 27 deletions
diff --git a/cpu/mpc512x/pci.c b/cpu/mpc512x/pci.c
index 3c63592..166a993 100644
--- a/cpu/mpc512x/pci.c
+++ b/cpu/mpc512x/pci.c
@@ -1,5 +1,6 @@
/*
* Copyright (C) Freescale Semiconductor, Inc. 2006, 2007. All rights reserved.
+ * Copyright (C) 2009 DENX Software Engineering <wd@denx.de>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -22,6 +23,7 @@
#include <common.h>
+#include <asm/io.h>
#include <asm/mmu.h>
#include <asm/global_data.h>
#include <pci.h>
@@ -46,7 +48,7 @@ static struct pci_controller pci_hose;
void
pci_init_board(void)
{
- volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+ volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
volatile law512x_t *pci_law;
volatile pot512x_t *pci_pot;
volatile pcictrl512x_t *pci_ctrl;
@@ -58,24 +60,29 @@ pci_init_board(void)
struct pci_controller *hose;
/* Set PCI divider for 33MHz */
- reg32 = immr->clk.scfr[0];
+ reg32 = im->clk.scfr[0];
reg32 &= ~(SCFR1_PCI_DIV_MASK);
reg32 |= SCFR1_PCI_DIV << SCFR1_PCI_DIV_SHIFT;
- immr->clk.scfr[0] = reg32;
+ im->clk.scfr[0] = reg32;
- pci_law = immr->sysconf.pcilaw;
- pci_pot = immr->ios.pot;
- pci_ctrl = &immr->pci_ctrl;
- pci_conf = &immr->pci_conf;
+ clrsetbits_be32(&im->clk.scfr[0],
+ SCFR1_PCI_DIV_MASK,
+ SCFR1_PCI_DIV << SCFR1_PCI_DIV_SHIFT
+ );
+
+ pci_law = im->sysconf.pcilaw;
+ pci_pot = im->ios.pot;
+ pci_ctrl = &im->pci_ctrl;
+ pci_conf = &im->pci_conf;
hose = &pci_hose;
/*
* Release PCI RST Output signal
*/
- pci_ctrl->gcr = 0;
+ out_be32(&pci_ctrl->gcr, 0);
udelay(2000);
- pci_ctrl->gcr = 1;
+ out_be32(&pci_ctrl->gcr, 1);
/* We need to wait at least a 1sec based on PCI specs */
for (i = 0; i < 1000; i++)
@@ -84,30 +91,39 @@ pci_init_board(void)
/*
* Configure PCI Local Access Windows
*/
- pci_law[0].bar = CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR;
- pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_512M;
+ out_be32(&pci_law[0].bar, CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR);
+ out_be32(&pci_law[0].ar, LAWAR_EN | LAWAR_SIZE_512M);
- pci_law[1].bar = CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR;
- pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_16M;
+ out_be32(&pci_law[1].bar, CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR);
+ out_be32(&pci_law[1].ar, LAWAR_EN | LAWAR_SIZE_16M);
/*
* Configure PCI Outbound Translation Windows
*/
/* PCI mem space - prefetch */
- pci_pot[0].potar = (CONFIG_SYS_PCI_MEM_BASE >> 12) & POTAR_TA_MASK;
- pci_pot[0].pobar = (CONFIG_SYS_PCI_MEM_PHYS >> 12) & POBAR_BA_MASK;
- pci_pot[0].pocmr = POCMR_EN | POCMR_PRE | POCMR_CM_256M;
+ out_be32(&pci_pot[0].potar,
+ (CONFIG_SYS_PCI_MEM_BASE >> 12) & POTAR_TA_MASK);
+ out_be32(&pci_pot[0].pobar,
+ (CONFIG_SYS_PCI_MEM_PHYS >> 12) & POBAR_BA_MASK);
+ out_be32(&pci_pot[0].pocmr,
+ POCMR_EN | POCMR_PRE | POCMR_CM_256M);
/* PCI IO space */
- pci_pot[1].potar = (CONFIG_SYS_PCI_IO_BASE >> 12) & POTAR_TA_MASK;
- pci_pot[1].pobar = (CONFIG_SYS_PCI_IO_PHYS >> 12) & POBAR_BA_MASK;
- pci_pot[1].pocmr = POCMR_EN | POCMR_IO | POCMR_CM_16M;
+ out_be32(&pci_pot[1].potar,
+ (CONFIG_SYS_PCI_IO_BASE >> 12) & POTAR_TA_MASK);
+ out_be32(&pci_pot[1].pobar,
+ (CONFIG_SYS_PCI_IO_PHYS >> 12) & POBAR_BA_MASK);
+ out_be32(&pci_pot[1].pocmr,
+ POCMR_EN | POCMR_IO | POCMR_CM_16M);
/* PCI mmio - non-prefetch mem space */
- pci_pot[2].potar = (CONFIG_SYS_PCI_MMIO_BASE >> 12) & POTAR_TA_MASK;
- pci_pot[2].pobar = (CONFIG_SYS_PCI_MMIO_PHYS >> 12) & POBAR_BA_MASK;
- pci_pot[2].pocmr = POCMR_EN | POCMR_CM_256M;
+ out_be32(&pci_pot[2].potar,
+ (CONFIG_SYS_PCI_MMIO_BASE >> 12) & POTAR_TA_MASK);
+ out_be32(&pci_pot[2].pobar,
+ (CONFIG_SYS_PCI_MMIO_PHYS >> 12) & POBAR_BA_MASK);
+ out_be32(&pci_pot[2].pocmr,
+ POCMR_EN | POCMR_CM_256M);
/*
* Configure PCI Inbound Translation Windows
@@ -115,11 +131,12 @@ pci_init_board(void)
/* we need RAM mapped to PCI space for the devices to
* access main memory */
- pci_ctrl[0].pitar1 = 0x0;
- pci_ctrl[0].pibar1 = 0x0;
- pci_ctrl[0].piebar1 = 0x0;
- pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
- PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);
+ out_be32(&pci_ctrl[0].pitar1, 0x0);
+ out_be32(&pci_ctrl[0].pibar1, 0x0);
+ out_be32(&pci_ctrl[0].piebar1, 0x0);
+ out_be32(&pci_ctrl[0].piwar1,
+ PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
+ PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1));
hose->first_busno = 0;
hose->last_busno = 0xff;