diff options
Diffstat (limited to 'board/freescale/mpc832xemds/pci.c')
| -rw-r--r-- | board/freescale/mpc832xemds/pci.c | 285 |
1 files changed, 77 insertions, 208 deletions
diff --git a/board/freescale/mpc832xemds/pci.c b/board/freescale/mpc832xemds/pci.c index 212fb52..e1dd757 100644 --- a/board/freescale/mpc832xemds/pci.c +++ b/board/freescale/mpc832xemds/pci.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2006 Freescale Semiconductor, Inc. + * Copyright (C) 2006-2009 Freescale Semiconductor, Inc. * * See file CREDITS for list of people who contributed to this * project. @@ -16,62 +16,78 @@ #include <asm/mmu.h> #include <asm/io.h> #include <common.h> +#include <mpc83xx.h> #include <pci.h> #include <i2c.h> -#if defined(CONFIG_OF_LIBFDT) -#include <libfdt.h> -#include <fdt_support.h> -#endif - #include <asm/fsl_i2c.h> +#include "../common/pq-mds-pib.h" DECLARE_GLOBAL_DATA_PTR; -#if defined(CONFIG_PCI) -#define PCI_FUNCTION_CONFIG 0x44 -#define PCI_FUNCTION_CFG_LOCK 0x20 +static struct pci_region pci1_regions[] = { + { + bus_start: CONFIG_SYS_PCI1_MEM_BASE, + phys_start: CONFIG_SYS_PCI1_MEM_PHYS, + size: CONFIG_SYS_PCI1_MEM_SIZE, + flags: PCI_REGION_MEM | PCI_REGION_PREFETCH + }, + { + bus_start: CONFIG_SYS_PCI1_IO_BASE, + phys_start: CONFIG_SYS_PCI1_IO_PHYS, + size: CONFIG_SYS_PCI1_IO_SIZE, + flags: PCI_REGION_IO + }, + { + bus_start: CONFIG_SYS_PCI1_MMIO_BASE, + phys_start: CONFIG_SYS_PCI1_MMIO_PHYS, + size: CONFIG_SYS_PCI1_MMIO_SIZE, + flags: PCI_REGION_MEM + }, +}; -/* - * Initialize PCI Devices, report devices found - */ -#ifndef CONFIG_PCI_PNP -static struct pci_config_table pci_mpc83xxemds_config_table[] = { +#ifdef CONFIG_MPC83XX_PCI2 +static struct pci_region pci2_regions[] = { { - PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, - pci_cfgfunc_config_device, - {PCI_ENET0_IOADDR, - PCI_ENET0_MEMADDR, - PCI_COMMON_MEMORY | PCI_COMMAND_MASTER} + bus_start: CONFIG_SYS_PCI2_MEM_BASE, + phys_start: CONFIG_SYS_PCI2_MEM_PHYS, + size: CONFIG_SYS_PCI2_MEM_SIZE, + flags: PCI_REGION_MEM | PCI_REGION_PREFETCH }, - {} -} -#endif -static struct pci_controller hose[] = { { -#ifndef CONFIG_PCI_PNP - config_table:pci_mpc83xxemds_config_table, -#endif + bus_start: CONFIG_SYS_PCI2_IO_BASE, + phys_start: CONFIG_SYS_PCI2_IO_PHYS, + size: CONFIG_SYS_PCI2_IO_SIZE, + flags: PCI_REGION_IO + }, + { + bus_start: CONFIG_SYS_PCI2_MMIO_BASE, + phys_start: CONFIG_SYS_PCI2_MMIO_PHYS, + size: CONFIG_SYS_PCI2_MMIO_SIZE, + flags: PCI_REGION_MEM }, }; +#endif + +DECLARE_GLOBAL_DATA_PTR; + -/********************************************************************** - * pci_init_board() - *********************************************************************/ void pci_init_board(void) #ifdef CONFIG_PCISLAVE { - u16 reg16; - volatile immap_t *immr; - volatile law83xx_t *pci_law; - volatile pot83xx_t *pci_pot; - volatile pcictrl83xx_t *pci_ctrl; - volatile pciconf83xx_t *pci_conf; + volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; + volatile law83xx_t *pci_law = immr->sysconf.pcilaw; + volatile pcictrl83xx_t *pci_ctrl = &immr->pci_ctrl[0]; + struct pci_region *reg[] = { pci1_regions }; + + /* Configure PCI Local Access Windows */ + pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR; + pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G; + + pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR; + pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M; + + mpc83xx_pci_init(1, reg, 0); - immr = (immap_t *) CONFIG_SYS_IMMR; - pci_law = immr->sysconf.pcilaw; - pci_pot = immr->ios.pot; - pci_ctrl = immr->pci_ctrl; - pci_conf = immr->pci_conf; /* * Configure PCI Inbound Translation Windows */ @@ -90,61 +106,24 @@ void pci_init_board(void) pci_ctrl[0].piebar2 = 0x0; pci_ctrl[0].piwar2 &= ~PIWAR_EN; - hose[0].first_busno = 0; - hose[0].last_busno = 0xff; - pci_setup_indirect(&hose[0], - (CONFIG_SYS_IMMR + 0x8300), (CONFIG_SYS_IMMR + 0x8304)); - reg16 = 0xff; - - pci_hose_read_config_word(&hose[0], PCI_BDF(0, 0, 0), - PCI_COMMAND, ®16); - reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MEMORY; - pci_hose_write_config_word(&hose[0], PCI_BDF(0, 0, 0), - PCI_COMMAND, reg16); - - /* - * Clear non-reserved bits in status register. - */ - pci_hose_write_config_word(&hose[0], PCI_BDF(0, 0, 0), - PCI_STATUS, 0xffff); - pci_hose_write_config_byte(&hose[0], PCI_BDF(0, 0, 0), - PCI_LATENCY_TIMER, 0x80); - - /* - * Unlock configuration lock in PCI function configuration register. - */ - pci_hose_read_config_word(&hose[0], PCI_BDF(0, 0, 0), - PCI_FUNCTION_CONFIG, ®16); - reg16 &= ~(PCI_FUNCTION_CFG_LOCK); - pci_hose_write_config_word(&hose[0], PCI_BDF(0, 0, 0), - PCI_FUNCTION_CONFIG, reg16); - - printf("Enabled PCI 32bit Agent Mode\n"); + /* Unlock the configuration bit */ + mpc83xx_pcislave_unlock(0); + printf("PCI: Agent mode enabled\n"); } #else { - volatile immap_t *immr; - volatile clk83xx_t *clk; - volatile law83xx_t *pci_law; - volatile pot83xx_t *pci_pot; - volatile pcictrl83xx_t *pci_ctrl; - volatile pciconf83xx_t *pci_conf; + volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; + volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk; + volatile law83xx_t *pci_law = immr->sysconf.pcilaw; +#ifndef CONFIG_MPC83XX_PCI2 + struct pci_region *reg[] = { pci1_regions }; +#else + struct pci_region *reg[] = { pci1_regions, pci2_regions }; +#endif - u16 reg16; - u32 val32; - u32 dev; + /* initialize the PCA9555PW IO expander on the PIB board */ + pib_init(); - immr = (immap_t *) CONFIG_SYS_IMMR; - clk = (clk83xx_t *) & immr->clk; - pci_law = immr->sysconf.pcilaw; - pci_pot = immr->ios.pot; - pci_ctrl = immr->pci_ctrl; - pci_conf = immr->pci_conf; - /* - * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode - */ - val32 = clk->occr; - udelay(2000); #if defined(PCI_66M) clk->occr = OCCR_PCICOE0 | OCCR_PCICOE1 | OCCR_PCICOE2; printf("PCI clock is 66MHz\n"); @@ -158,129 +137,19 @@ void pci_init_board(void) #endif udelay(2000); - /* - * Configure PCI Local Access Windows - */ - pci_law[0].bar = CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR; + /* Configure PCI Local Access Windows */ + pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR; pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_512M; - pci_law[1].bar = CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR; + pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR; pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_1M; - /* - * 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_SE | (POCMR_CM_256M & POCMR_CM_MASK); - - /* PCI mmio - non-prefetch mem space */ - pci_pot[1].potar = (CONFIG_SYS_PCI_MMIO_BASE >> 12) & POTAR_TA_MASK; - pci_pot[1].pobar = (CONFIG_SYS_PCI_MMIO_PHYS >> 12) & POBAR_BA_MASK; - pci_pot[1].pocmr = POCMR_EN | (POCMR_CM_256M & POCMR_CM_MASK); - - /* PCI IO space */ - pci_pot[2].potar = (CONFIG_SYS_PCI_IO_BASE >> 12) & POTAR_TA_MASK; - pci_pot[2].pobar = (CONFIG_SYS_PCI_IO_PHYS >> 12) & POBAR_BA_MASK; - pci_pot[2].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_1M & POCMR_CM_MASK); - - /* - * Configure PCI Inbound Translation Windows - */ - pci_ctrl[0].pitar1 = (CONFIG_SYS_PCI_SLV_MEM_LOCAL >> 12) & PITAR_TA_MASK; - pci_ctrl[0].pibar1 = (CONFIG_SYS_PCI_SLV_MEM_BUS >> 12) & PIBAR_MASK; - pci_ctrl[0].piebar1 = 0x0; - pci_ctrl[0].piwar1 = - PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | - PIWAR_IWS_2G; - - /* - * Release PCI RST Output signal - */ udelay(2000); - pci_ctrl[0].gcr = 1; - udelay(2000); - - hose[0].first_busno = 0; - hose[0].last_busno = 0xff; - - /* PCI memory prefetch space */ - pci_set_region(hose[0].regions + 0, - CONFIG_SYS_PCI_MEM_BASE, - CONFIG_SYS_PCI_MEM_PHYS, - CONFIG_SYS_PCI_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH); - - /* PCI memory space */ - pci_set_region(hose[0].regions + 1, - CONFIG_SYS_PCI_MMIO_BASE, - CONFIG_SYS_PCI_MMIO_PHYS, CONFIG_SYS_PCI_MMIO_SIZE, PCI_REGION_MEM); - - /* PCI IO space */ - pci_set_region(hose[0].regions + 2, - CONFIG_SYS_PCI_IO_BASE, - CONFIG_SYS_PCI_IO_PHYS, CONFIG_SYS_PCI_IO_SIZE, PCI_REGION_IO); - - /* System memory space */ - pci_set_region(hose[0].regions + 3, - CONFIG_SYS_PCI_SLV_MEM_LOCAL, - CONFIG_SYS_PCI_SLV_MEM_BUS, - CONFIG_SYS_PCI_SLV_MEM_SIZE, - PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); - hose[0].region_count = 4; - - pci_setup_indirect(&hose[0], - (CONFIG_SYS_IMMR + 0x8300), (CONFIG_SYS_IMMR + 0x8304)); - - pci_register_hose(hose); - - /* - * Write command register - */ - reg16 = 0xff; - dev = PCI_BDF(0, 0, 0); - pci_hose_read_config_word(&hose[0], dev, PCI_COMMAND, ®16); - reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - pci_hose_write_config_word(&hose[0], dev, PCI_COMMAND, reg16); - - /* - * Clear non-reserved bits in status register. - */ - pci_hose_write_config_word(&hose[0], dev, PCI_STATUS, 0xffff); - pci_hose_write_config_byte(&hose[0], dev, PCI_LATENCY_TIMER, 0x80); - pci_hose_write_config_byte(&hose[0], dev, PCI_CACHE_LINE_SIZE, 0x08); - - /* - * Hose scan. - */ - hose->last_busno = pci_hose_scan(hose); +#ifndef CONFIG_MPC83XX_PCI2 + mpc83xx_pci_init(1, reg, 0); +#else + mpc83xx_pci_init(2, reg, 0); +#endif } #endif /* CONFIG_PCISLAVE */ - -#if defined(CONFIG_OF_LIBFDT) -void ft_pci_setup(void *blob, bd_t *bd) -{ - int nodeoffset; - int tmp[2]; - const char *path; - - nodeoffset = fdt_path_offset(blob, "/aliases"); - if (nodeoffset >= 0) { - path = fdt_getprop(blob, nodeoffset, "pci0", NULL); - if (path) { - tmp[0] = cpu_to_be32(hose[0].first_busno); - tmp[1] = cpu_to_be32(hose[0].last_busno); - do_fixup_by_path(blob, path, "bus-range", - &tmp, sizeof(tmp), 1); - - tmp[0] = cpu_to_be32(gd->pci_clk); - do_fixup_by_path(blob, path, "clock-frequency", - &tmp, sizeof(tmp[0]), 1); - } - } -} -#endif /* CONFIG_OF_LIBFDT */ -#endif /* CONFIG_PCI */ |