diff options
Diffstat (limited to 'cpu/mpc512x/pci.c')
| -rw-r--r-- | cpu/mpc512x/pci.c | 71 |
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; |