Added PCI support for MPC8349ADS board
Signed-off-by: Kumar Gala galak@kernel.crashing.org
CHANGELOG: * Added PCI support for MPC8349ADS board Patch by Kumar Gala 10 Nov 2005
--- commit 17bdd79e9b7151c511b9e5c94cd850ab4d74b1a4 tree ef96e01f333e94ea6d9267fceec9b8b3a0d7553b parent d47f4a474e3ca12a373ac849f2941da29ee487a0 author Kumar Gala galak@kernel.crashing.org Thu, 10 Nov 2005 15:50:57 -0600 committer Kumar Gala galak@kernel.crashing.org Thu, 10 Nov 2005 15:50:57 -0600
board/mpc8349ads/Makefile | 2 board/mpc8349ads/mpc8349ads.c | 41 ------ board/mpc8349ads/pci.c | 260 +++++++++++++++++++++++++++++++++++++++++ include/configs/MPC8349ADS.h | 4 - 4 files changed, 262 insertions(+), 45 deletions(-)
diff --git a/board/mpc8349ads/Makefile b/board/mpc8349ads/Makefile index 4327b0d..f865f9c 100644 --- a/board/mpc8349ads/Makefile +++ b/board/mpc8349ads/Makefile @@ -24,7 +24,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
-OBJS := $(BOARD).o +OBJS := $(BOARD).o pci.o
$(LIB): $(OBJS) $(SOBJS) $(AR) crv $@ $(OBJS) diff --git a/board/mpc8349ads/mpc8349ads.c b/board/mpc8349ads/mpc8349ads.c index da8d3d7..505acbc 100644 --- a/board/mpc8349ads/mpc8349ads.c +++ b/board/mpc8349ads/mpc8349ads.c @@ -147,47 +147,6 @@ int checkboard (void) return 0; }
-#if defined(CONFIG_PCI) -/* - * Initialize PCI Devices, report devices found - */ -#ifndef CONFIG_PCI_PNP -static struct pci_config_table pci_mpc83xxads_config_table[] = { - {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 - } }, - {} -} -#endif - - -volatile static struct pci_controller hose[] = { - { -#ifndef CONFIG_PCI_PNP - config_table:pci_mpc83xxads_config_table, -#endif - }, - { -#ifndef CONFIG_PCI_PNP - config_table:pci_mpc83xxads_config_table, -#endif - } -}; -#endif /* CONFIG_PCI */ - - -void -pci_init_board(void) -{ -#ifdef CONFIG_PCI - extern void pci_mpc83xx_init(volatile struct pci_controller *hose); - - pci_mpc83xx_init(hose); -#endif /* CONFIG_PCI */ -} - /* * if MPC8349ADS is soldered with SDRAM */ diff --git a/board/mpc8349ads/pci.c b/board/mpc8349ads/pci.c new file mode 100644 index 0000000..4c37984 --- /dev/null +++ b/board/mpc8349ads/pci.c @@ -0,0 +1,260 @@ +/* + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#include <asm/mmu.h> +#include <common.h> +#include <asm/global_data.h> +#include <pci.h> +#include <i2c.h> + +#ifdef CONFIG_PCI + +/* System RAM mapped to PCI space */ +#define CONFIG_PCI_SYS_MEM_BUS CFG_SDRAM_BASE +#define CONFIG_PCI_SYS_MEM_PHYS CFG_SDRAM_BASE + +#ifndef CONFIG_PCI_PNP +static struct pci_config_table pci_mpc83xxads_config_table[] = { + {PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, + PCI_IDSEL_NUMBER, PCI_ANY_ID, + pci_cfgfunc_config_device, {PCI_ENET0_IOADDR, + PCI_ENET0_MEMADDR, + PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER + } + }, + {} +}; +#endif + +static struct pci_controller pci_hose[] = { + { +#ifndef CONFIG_PCI_PNP + config_table:pci_mpc83xxads_config_table, +#endif + }, + { +#ifndef CONFIG_PCI_PNP + config_table:pci_mpc83xxads_config_table, +#endif + } +}; + +/************************************************************************** + * + * pib_init() -- initialize the PCA9555PW IO expander on the PIB board + * + */ +void +pib_init(void) +{ + u8 val8; + /* + * Assign PIB PMC slot to desired PCI bus + */ + mpc8349_i2c = (i2c_t*)(CFG_IMMRBAR + CFG_I2C2_OFFSET); + i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE); + + val8 = 0; + i2c_write(0x23, 0x6, 1, &val8, 1); + i2c_write(0x23, 0x7, 1, &val8, 1); + val8 = 0xff; + i2c_write(0x23, 0x2, 1, &val8, 1); + i2c_write(0x23, 0x3, 1, &val8, 1); + + val8 = 0; + i2c_write(0x26, 0x6, 1, &val8, 1); + val8 = 0x34; + i2c_write(0x26, 0x7, 1, &val8, 1); +#if defined(PCI_64BIT) + val8 = 0xf4; /* PMC2:PCI1/64-bit */ +#elif defined(PCI_ALL_PCI1) + val8 = 0xf3; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI1 */ +#elif defined(PCI_ONE_PCI1) + val8 = 0xf9; /* PMC1:PCI1 PMC2:PCI2 PMC3:PCI2 */ +#else + val8 = 0xf5; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI2 */ +#endif + i2c_write(0x26, 0x2, 1, &val8, 1); + val8 = 0xff; + i2c_write(0x26, 0x3, 1, &val8, 1); + val8 = 0; + i2c_write(0x27, 0x6, 1, &val8, 1); + i2c_write(0x27, 0x7, 1, &val8, 1); + val8 = 0xff; + i2c_write(0x27, 0x2, 1, &val8, 1); + val8 = 0xef; + i2c_write(0x27, 0x3, 1, &val8, 1); + asm("eieio"); + +#if defined(PCI_64BIT) + printf("PCI1: 64-bit on PMC2\n"); +#elif defined(PCI_ALL_PCI1) + printf("PCI1: 32-bit on PMC1, PMC2, PMC3\n"); +#elif defined(PCI_ONE_PCI1) + printf("PCI1: 32-bit on PMC1\n"); + printf("PCI2: 32-bit on PMC2, PMC3\n"); +#else + printf("PCI1: 32-bit on PMC1, PMC2\n"); + printf("PCI2: 32-bit on PMC3\n"); +#endif +} + +/************************************************************************** + * pci_init_board() + * + * NOTICE: PCI2 is not currently supported + * + */ +void +pci_init_board(void) +{ + DECLARE_GLOBAL_DATA_PTR; + volatile immap_t * immr; + volatile clk8349_t * clk; + volatile law8349_t * pci_law; + volatile pot8349_t * pci_pot; + volatile pcictrl8349_t * pci_ctrl; + volatile pciconf8349_t * pci_conf; + u16 reg16; + u32 reg32; + struct pci_controller * hose; + + immr = (immap_t *)CFG_IMMRBAR; + clk = (clk8349_t *)&immr->clk; + pci_law = immr->sysconf.pcilaw; + pci_pot = immr->ios.pot; + pci_ctrl = immr->pci_ctrl; + pci_conf = immr->pci_conf; + + hose = &pci_hose[0]; + + pib_init(); + + /* + * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode + */ + + reg32 = clk->occr; + udelay(2000); + clk->occr = 0xff000000; + udelay(2000); + + /* + * Release PCI RST Output signal + */ + pci_ctrl[0].gcr = 0; + udelay(2000); + pci_ctrl[0].gcr = 1; + udelay(2000); + + /* + * Configure PCI Local Access Windows + */ + pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR; + pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G; + + pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR; + pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M; + + /* + * Configure PCI Outbound Translation Windows + */ + + /* PCI1 mem space */ + pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK; + pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK; + pci_pot[0].pocmr = POCMR_EN | (POCMR_CM_512M & POCMR_CM_MASK); + + /* PCI1 IO space */ + pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK; + pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK; + pci_pot[1].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_16M & POCMR_CM_MASK); + + /* + * Configure PCI Inbound Translation Windows + */ + + /* 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 | PIWAR_IWS_2G; + + hose->first_busno = 0; + hose->last_busno = 0xff; + + /* PCI memory space */ + pci_set_region(hose->regions + 0, + CFG_PCI1_MEM_BASE, + CFG_PCI1_MEM_PHYS, + CFG_PCI1_MEM_SIZE, + PCI_REGION_MEM); + + /* PCI IO space */ + pci_set_region(hose->regions + 1, + CFG_PCI1_IO_BASE, + CFG_PCI1_IO_PHYS, + CFG_PCI1_IO_SIZE, + PCI_REGION_IO); + + /* System memory space */ + pci_set_region(hose->regions + 2, + CONFIG_PCI_SYS_MEM_BUS, + CONFIG_PCI_SYS_MEM_PHYS, + gd->ram_size, + PCI_REGION_MEM | PCI_REGION_MEMORY); + + hose->region_count = 3; + + pci_setup_indirect(hose, + (CFG_IMMRBAR+0x8300), + (CFG_IMMRBAR+0x8304)); + + pci_register_hose(hose); + + /* + * Write to Command register + */ + reg16 = 0xff; + pci_hose_read_config_word (hose, PCI_BDF(0,0,0), PCI_COMMAND, + ®16); + reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; + pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_COMMAND, + reg16); + + /* + * Clear non-reserved bits in status register. + */ + pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_STATUS, + 0xffff); + pci_hose_write_config_byte(hose, PCI_BDF(0,0,0), PCI_LATENCY_TIMER, + 0x80); + +#ifdef CONFIG_PCI_SCAN_SHOW + printf("PCI: Bus Dev VenId DevId Class Int\n"); +#endif + /* + * Hose scan. + */ + hose->last_busno = pci_hose_scan(hose); +} +#endif /* CONFIG_PCI */ diff --git a/include/configs/MPC8349ADS.h b/include/configs/MPC8349ADS.h index d6d2fab..41309ac 100644 --- a/include/configs/MPC8349ADS.h +++ b/include/configs/MPC8349ADS.h @@ -41,9 +41,7 @@ #define CONFIG_MPC8349 1 /* MPC8349 specific */ #define CONFIG_MPC8349ADS 1 /* MPC8349ADS board specific */
-/* FIXME: Real PCI support will come in a follow-up update. */ -#undef CONFIG_PCI - +#define CONFIG_PCI #define CONFIG_TSEC_ENET /* tsec ethernet support */ #define CONFIG_ENV_OVERWRITE