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Diffstat (limited to 'board/prodrive/p3p440/p3p440.c')
| -rwxr-xr-x | board/prodrive/p3p440/p3p440.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/board/prodrive/p3p440/p3p440.c b/board/prodrive/p3p440/p3p440.c new file mode 100755 index 0000000..d42a643 --- /dev/null +++ b/board/prodrive/p3p440/p3p440.c @@ -0,0 +1,264 @@ +/* + * (C) Copyright 2005 + * Stefan Roese, DENX Software Engineering, sr@denx.de. + * + * Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.com> + * + * 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 <common.h> +#include <asm/processor.h> +#include <command.h> + +#include "p3p440.h" + +void set_led(int color) +{ + switch (color) { + case LED_OFF: + out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LED_GREEN & ~CFG_LED_RED); + break; + + case LED_GREEN: + out32(GPIO0_OR, (in32(GPIO0_OR) | CFG_LED_GREEN) & ~CFG_LED_RED); + break; + + case LED_RED: + out32(GPIO0_OR, (in32(GPIO0_OR) | CFG_LED_RED) & ~CFG_LED_GREEN); + break; + + case LED_ORANGE: + out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LED_GREEN | CFG_LED_RED); + break; + } +} + +static int is_monarch(void) +{ + out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_GPIO_RDY); + udelay(1000); + + if (in32(GPIO0_IR) & CFG_MONARCH_IO) + return 0; + else + return 1; +} + +static void wait_for_pci_ready(void) +{ + /* + * Configure EREADY_IO as input + */ + out32(GPIO0_TCR, in32(GPIO0_TCR) & ~CFG_EREADY_IO); + udelay(1000); + + for (;;) { + if (in32(GPIO0_IR) & CFG_EREADY_IO) + return; + } + +} + +int board_early_init_f(void) +{ + uint reg; + + /*-------------------------------------------------------------------- + * Setup the external bus controller/chip selects + *-------------------------------------------------------------------*/ + mtdcr(ebccfga, xbcfg); + reg = mfdcr(ebccfgd); + mtdcr(ebccfgd, reg | 0x04000000); /* Set ATC */ + + /*-------------------------------------------------------------------- + * Setup pin multiplexing (GPIO/IRQ...) + *-------------------------------------------------------------------*/ + mtdcr(cpc0_gpio, 0x03F01F80); + + out32(GPIO0_ODR, 0x00000000); /* no open drain pins */ + out32(GPIO0_TCR, CFG_GPIO_RDY | CFG_EREADY_IO | CFG_LED_RED | CFG_LED_GREEN); + out32(GPIO0_OR, CFG_GPIO_RDY); + + /*-------------------------------------------------------------------- + * Setup the interrupt controller polarities, triggers, etc. + *-------------------------------------------------------------------*/ + mtdcr(uic0sr, 0xffffffff); /* clear all */ + mtdcr(uic0er, 0x00000000); /* disable all */ + mtdcr(uic0cr, 0x00000001); /* UIC1 crit is critical */ + mtdcr(uic0pr, 0xfffffe13); /* per ref-board manual */ + mtdcr(uic0tr, 0x01c00008); /* per ref-board manual */ + mtdcr(uic0vr, 0x00000001); /* int31 highest, base=0x000 */ + mtdcr(uic0sr, 0xffffffff); /* clear all */ + + mtdcr(uic1sr, 0xffffffff); /* clear all */ + mtdcr(uic1er, 0x00000000); /* disable all */ + mtdcr(uic1cr, 0x00000000); /* all non-critical */ + mtdcr(uic1pr, 0xffffe0ff); /* per ref-board manual */ + mtdcr(uic1tr, 0x00ffc000); /* per ref-board manual */ + mtdcr(uic1vr, 0x00000001); /* int31 highest, base=0x000 */ + mtdcr(uic1sr, 0xffffffff); /* clear all */ + + return 0; +} + +int checkboard(void) +{ + char *s = getenv("serial#"); + + printf("Board: P3P440"); + if (s != NULL) { + puts(", serial# "); + puts(s); + } + + if (is_monarch()) { + puts(", Monarch"); + } else { + puts(", None-Monarch"); + } + + putc('\n'); + + return (0); +} + +int misc_init_r (void) +{ + DECLARE_GLOBAL_DATA_PTR; + + /* + * Adjust flash start and offset to detected values + */ + gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize; + gd->bd->bi_flashoffset = 0; + + /* + * Check if only one FLASH bank is available + */ + if (gd->bd->bi_flashsize != CFG_MAX_FLASH_BANKS * (0 - CFG_FLASH0)) { + mtebc(pb1cr, 0); /* disable cs */ + mtebc(pb1ap, 0); + mtebc(pb2cr, 0); /* disable cs */ + mtebc(pb2ap, 0); + mtebc(pb3cr, 0); /* disable cs */ + mtebc(pb3ap, 0); + } + + return 0; +} + +/************************************************************************* + * pci_pre_init + * + * This routine is called just prior to registering the hose and gives + * the board the opportunity to check things. Returning a value of zero + * indicates that things are bad & PCI initialization should be aborted. + * + * Different boards may wish to customize the pci controller structure + * (add regions, override default access routines, etc) or perform + * certain pre-initialization actions. + * + ************************************************************************/ +#if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) +int pci_pre_init(struct pci_controller *hose) +{ + unsigned long strap; + + /*--------------------------------------------------------------------------+ + * The P3P440 board is always configured as the host & requires the + * PCI arbiter to be disabled because it's an PMC module. + *--------------------------------------------------------------------------*/ + strap = mfdcr(cpc0_strp1); + if (strap & 0x00100000) { + printf("PCI: CPC0_STRP1[PAE] set.\n"); + return 0; + } + + return 1; +} +#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */ + +/************************************************************************* + * pci_target_init + * + * The bootstrap configuration provides default settings for the pci + * inbound map (PIM). But the bootstrap config choices are limited and + * may not be sufficient for a given board. + * + ************************************************************************/ +#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) +void pci_target_init(struct pci_controller *hose) +{ + DECLARE_GLOBAL_DATA_PTR; + + /*--------------------------------------------------------------------------+ + * Disable everything + *--------------------------------------------------------------------------*/ + out32r(PCIX0_PIM0SA, 0); /* disable */ + out32r(PCIX0_PIM1SA, 0); /* disable */ + out32r(PCIX0_PIM2SA, 0); /* disable */ + out32r(PCIX0_EROMBA, 0); /* disable expansion rom */ + + /*--------------------------------------------------------------------------+ + * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping + * options to not support sizes such as 128/256 MB. + *--------------------------------------------------------------------------*/ + out32r(PCIX0_PIM0LAL, CFG_SDRAM_BASE); + out32r(PCIX0_PIM0LAH, 0); + out32r(PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1); + + out32r(PCIX0_BAR0, 0); + + /*--------------------------------------------------------------------------+ + * Program the board's subsystem id/vendor id + *--------------------------------------------------------------------------*/ + out16r(PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID); + out16r(PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID); + + out16r(PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY); +} +#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */ + +/************************************************************************* + * is_pci_host + * + * This routine is called to determine if a pci scan should be + * performed. With various hardware environments (especially cPCI and + * PPMC) it's insufficient to depend on the state of the arbiter enable + * bit in the strap register, or generic host/adapter assumptions. + * + * Rather than hard-code a bad assumption in the general 440 code, the + * 440 pci code requires the board to decide at runtime. + * + * Return 0 for adapter mode, non-zero for host (monarch) mode. + * + * + ************************************************************************/ +#if defined(CONFIG_PCI) +int is_pci_host(struct pci_controller *hose) +{ + if (is_monarch()) { + wait_for_pci_ready(); + return 1; /* return 1 for host controller */ + } else { + return 0; /* return 0 for adapter controller */ + } +} +#endif /* defined(CONFIG_PCI) */ |