diff options
Diffstat (limited to 'arch/ppc/platforms/4xx/cpci405.c')
| -rw-r--r-- | arch/ppc/platforms/4xx/cpci405.c | 139 |
1 files changed, 128 insertions, 11 deletions
diff --git a/arch/ppc/platforms/4xx/cpci405.c b/arch/ppc/platforms/4xx/cpci405.c index 6571e39fbe48..970b69831e6f 100644 --- a/arch/ppc/platforms/4xx/cpci405.c +++ b/arch/ppc/platforms/4xx/cpci405.c @@ -1,10 +1,12 @@ /* * Board setup routines for the esd CPCI-405 cPCI Board. * - * Author: Stefan Roese - * stefan.roese@esd-electronics.com + * Copyright 2001-2006 esd electronic system design - hannover germany * - * Copyright 2001 esd electronic system design - hannover germany + * Authors: Matthias Fuchs + * matthias.fuchs@esd-electronics.com + * Stefan Roese + * stefan.roese@esd-electronics.com * * 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 @@ -20,9 +22,17 @@ #include <asm/pci-bridge.h> #include <asm/machdep.h> #include <asm/todc.h> +#include <linux/serial.h> +#include <linux/serial_core.h> #include <asm/ocp.h> +#include <asm/ibm_ocp_pci.h> +#include <platforms/4xx/ibm405gp.h> +#ifdef CONFIG_GEN_RTC void *cpci405_nvram; +#endif + +extern bd_t __res; /* * Some IRQs unique to CPCI-405. @@ -36,18 +46,69 @@ ppc405_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) * A B C D */ { - {28, 28, 28, 28}, /* IDSEL 15 - cPCI slot 8 */ - {29, 29, 29, 29}, /* IDSEL 16 - cPCI slot 7 */ - {30, 30, 30, 30}, /* IDSEL 17 - cPCI slot 6 */ - {27, 27, 27, 27}, /* IDSEL 18 - cPCI slot 5 */ - {28, 28, 28, 28}, /* IDSEL 19 - cPCI slot 4 */ - {29, 29, 29, 29}, /* IDSEL 20 - cPCI slot 3 */ - {30, 30, 30, 30}, /* IDSEL 21 - cPCI slot 2 */ + {28, 29, 30, 27}, /* IDSEL 15 - cPCI slot 8 */ + {29, 30, 27, 28}, /* IDSEL 16 - cPCI slot 7 */ + {30, 27, 28, 29}, /* IDSEL 17 - cPCI slot 6 */ + {27, 28, 29, 30}, /* IDSEL 18 - cPCI slot 5 */ + {28, 29, 30, 27}, /* IDSEL 19 - cPCI slot 4 */ + {29, 30, 27, 28}, /* IDSEL 20 - cPCI slot 3 */ + {30, 27, 28, 29}, /* IDSEL 21 - cPCI slot 2 */ }; const long min_idsel = 15, max_idsel = 21, irqs_per_slot = 4; return PCI_IRQ_TABLE_LOOKUP; }; +/* The serial clock for the chip is an internal clock determined by + * different clock speeds/dividers. + * Calculate the proper input baud rate and setup the serial driver. + */ +static void __init +cpci405_early_serial_map(void) +{ + u32 uart_div; + int uart_clock; + struct uart_port port; + + /* Calculate the serial clock input frequency + * + * The uart clock is the cpu frequency (provided in the board info + * structure) divided by the external UART Divisor. + */ + uart_div = ((mfdcr(DCRN_CHCR_BASE) & CHR0_UDIV) >> 1) + 1; + uart_clock = __res.bi_procfreq / uart_div; + + /* Setup serial port access */ + memset(&port, 0, sizeof(port)); +#if defined(CONFIG_UART0_TTYS0) + port.membase = (void*)UART0_IO_BASE; + port.irq = UART0_INT; +#else + port.membase = (void*)UART1_IO_BASE; + port.irq = UART1_INT; +#endif + port.uartclk = uart_clock; + port.regshift = 0; + port.iotype = UPIO_MEM; + port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; + port.line = 0; + + if (early_serial_setup(&port) != 0) { + printk("Early serial init of port 0 failed\n"); + } +#if defined(CONFIG_UART0_TTYS0) + port.membase = (void*)UART1_IO_BASE; + port.irq = UART1_INT; +#else + port.membase = (void*)UART0_IO_BASE; + port.irq = UART0_INT; +#endif + port.line = 1; + + if (early_serial_setup(&port) != 0) { + printk("Early serial init of port 1 failed\n"); + } +} + void __init cpci405_setup_arch(void) { @@ -55,14 +116,68 @@ cpci405_setup_arch(void) ibm_ocp_set_emac(0, 0); - TODC_INIT(TODC_TYPE_MK48T35, cpci405_nvram, cpci405_nvram, cpci405_nvram, 8); + cpci405_early_serial_map(); + +#ifdef CONFIG_GEN_RTC + TODC_INIT(TODC_TYPE_MK48T35, + cpci405_nvram, cpci405_nvram, cpci405_nvram, 8); +#endif +} + +void __init +bios_fixup(struct pci_controller *hose, struct pcil0_regs *pcip) +{ + unsigned int bar_response, bar; + + /* 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); + out_le32((void *) &(pcip->ptm1ms), 0x00000001); + + /* 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); + out_le32((void *) &(pcip->ptm2ms), 0x00000000); + out_le32((void *) &(pcip->ptm2la), 0x00000000); + + /* Zero config bars */ + for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) { + early_write_config_dword(hose, hose->first_busno, + PCI_FUNC(hose->first_busno), bar, + 0x00000000); + early_read_config_dword(hose, hose->first_busno, + PCI_FUNC(hose->first_busno), bar, + &bar_response); + } } void __init cpci405_map_io(void) { ppc4xx_map_io(); + +#ifdef CONFIG_GEN_RTC cpci405_nvram = ioremap(CPCI405_NVRAM_PADDR, CPCI405_NVRAM_SIZE); +#endif } void __init @@ -74,9 +189,11 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5, ppc_md.setup_arch = cpci405_setup_arch; ppc_md.setup_io_mappings = cpci405_map_io; +#ifdef CONFIG_GEN_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 } |