diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/gcplus/Makefile | 49 | ||||
| -rw-r--r-- | board/gcplus/config.mk | 13 | ||||
| -rw-r--r-- | board/gcplus/flash.c | 440 | ||||
| -rw-r--r-- | board/gcplus/gcplus.c | 73 | ||||
| -rw-r--r-- | board/gcplus/memsetup.S | 77 | ||||
| -rw-r--r-- | board/gcplus/u-boot.lds | 57 |
6 files changed, 709 insertions, 0 deletions
diff --git a/board/gcplus/Makefile b/board/gcplus/Makefile new file mode 100644 index 0000000..d0f7d1c --- /dev/null +++ b/board/gcplus/Makefile @@ -0,0 +1,49 @@ +# +# (C) Copyright 2000 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# 2003 (c) MontaVista Software, Inc. +# +# 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 $(TOPDIR)/config.mk + +LIB = lib$(BOARD).a + +OBJS := gcplus.o flash.o +SOBJS := memsetup.o + +$(LIB): $(OBJS) $(SOBJS) + $(AR) crv $@ $(OBJS) $(SOBJS) + +clean: + rm -f $(SOBJS) $(OBJS) + +distclean: clean + rm -f $(LIB) core *.bak .depend + +######################################################################### + +.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c) + $(CC) -M $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@ + +-include .depend + +######################################################################### diff --git a/board/gcplus/config.mk b/board/gcplus/config.mk new file mode 100644 index 0000000..57326b8 --- /dev/null +++ b/board/gcplus/config.mk @@ -0,0 +1,13 @@ +# +# ADS GCPlus board with SA1110 cpu +# +# The ADS GCPlus has 2 banks of 16 MiB SDRAM +# +# We use the ADS GCPlus Linux boot ROM to load U-Boot into SDRAM +# at c020'0000 and then move ourself to c8f0'0000. Basically, just +# install the U-Boot binary as you would the Linux zImage and then +# reap the benfits of more convenient Linux development cycles, i.e. +# bootp;tftp;bootm, repeat, etc.,. +# + +TEXT_BASE = 0xc8f00000 diff --git a/board/gcplus/flash.c b/board/gcplus/flash.c new file mode 100644 index 0000000..5455656 --- /dev/null +++ b/board/gcplus/flash.c @@ -0,0 +1,440 @@ +/* + * (C) Copyright 2001 + * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net + * + * (C) Copyright 2001 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 2003 (c) MontaVista Software, Inc. + * + * 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 <linux/byteorder/swab.h> + +flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ + +/* Board support for 1 or 2 flash devices */ +#define FLASH_PORT_WIDTH32 +#undef FLASH_PORT_WIDTH16 + +#ifdef FLASH_PORT_WIDTH16 +#define FLASH_PORT_WIDTH ushort +#define FLASH_PORT_WIDTHV vu_short +#define SWAP(x) __swab16(x) +#else +#define FLASH_PORT_WIDTH ulong +#define FLASH_PORT_WIDTHV vu_long +#define SWAP(x) __swab32(x) +#endif + +#define FPW FLASH_PORT_WIDTH +#define FPWV FLASH_PORT_WIDTHV + +#define mb() __asm__ __volatile__ ("" : : : "memory") + +/*----------------------------------------------------------------------- + * Functions + */ +static ulong flash_get_size(FPW * addr, flash_info_t * info); +static int write_data(flash_info_t * info, ulong dest, FPW data); +static void flash_get_offsets(ulong base, flash_info_t * info); +void inline spin_wheel(void); + +/*----------------------------------------------------------------------- + */ + +unsigned long +flash_init(void) +{ + int i; + ulong size = 0; + + for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { + switch (i) { + case 0: + flash_get_size((FPW *) PHYS_FLASH_1, &flash_info[i]); + flash_get_offsets(PHYS_FLASH_1, &flash_info[i]); + break; + default: + panic("configured too many flash banks!\n"); + break; + } + size += flash_info[i].size; + } + + /* Protect monitor and environment sectors + */ + flash_protect(FLAG_PROTECT_SET, + CFG_FLASH_BASE, + CFG_FLASH_BASE + monitor_flash_len - 1, &flash_info[0]); + + flash_protect(FLAG_PROTECT_SET, + CFG_ENV_ADDR, + CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); + + return size; +} + +/*----------------------------------------------------------------------- + */ +static void +flash_get_offsets(ulong base, flash_info_t * info) +{ + int i; + + if (info->flash_id == FLASH_UNKNOWN) { + return; + } + + if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { + for (i = 0; i < info->sector_count; i++) { + info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE); + info->protect[i] = 0; + } + } +} + +/*----------------------------------------------------------------------- + */ +void +flash_print_info(flash_info_t * info) +{ + int i; + + if (info->flash_id == FLASH_UNKNOWN) { + printf("missing or unknown FLASH type\n"); + return; + } + + switch (info->flash_id & FLASH_VENDMASK) { + case FLASH_MAN_INTEL: + printf("INTEL "); + break; + default: + printf("Unknown Vendor "); + break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case FLASH_28F128J3A: + printf("28F128J3A\n"); + break; + case FLASH_28F640J5: + printf("28F640J5\n"); + break; + default: + printf("Unknown Chip Type\n"); + break; + } + + printf(" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + + printf(" Sector Start Addresses:"); + for (i = 0; i < info->sector_count; ++i) { + if ((i % 5) == 0) + printf("\n "); + printf(" %08lX%s", + info->start[i], info->protect[i] ? " (RO)" : " "); + } + printf("\n"); + return; +} + +/* + * The following code cannot be run from FLASH! + */ +static ulong +flash_get_size(FPW * addr, flash_info_t * info) +{ + volatile FPW value; + /* Write auto select command: read Manufacturer ID */ + addr[0x5555] = (FPW) 0x00AA00AA; + addr[0x2AAA] = (FPW) 0x00550055; + addr[0x5555] = (FPW) 0x00900090; + + mb(); + value = addr[0]; + + switch (value) { + + case (FPW) INTEL_MANUFACT: + info->flash_id = FLASH_MAN_INTEL; + break; + + default: + info->flash_id = FLASH_UNKNOWN; + info->sector_count = 0; + info->size = 0; + addr[0] = (FPW) 0x00FF00FF; /* restore read mode */ + return (0); /* no or unknown flash */ + } + + mb(); + value = addr[1]; /* device ID */ + switch (value) { + case (FPW) INTEL_ID_28F128J3A: + info->flash_id += FLASH_28F128J3A; + info->sector_count = 128; + info->size = 0x02000000; + break; /* => 16 MB */ + case (FPW) INTEL_ID_28F640J5: + info->flash_id += FLASH_28F640J5; + info->sector_count = 64; + info->size = 0x01000000; + break; /* => 16 MB */ + + default: + info->flash_id = FLASH_UNKNOWN; + break; + } + + if (info->sector_count > CFG_MAX_FLASH_SECT) { + printf("** ERROR: sector count %d > max (%d) **\n", + info->sector_count, CFG_MAX_FLASH_SECT); + info->sector_count = CFG_MAX_FLASH_SECT; + } + + addr[0] = (FPW) 0x00FF00FF; /* restore read mode */ + + return (info->size); +} + +/*----------------------------------------------------------------------- + */ + +int +flash_erase(flash_info_t * info, int s_first, int s_last) +{ + int flag, prot, sect; + ulong type, start, last; + int rcode = 0; + + if ((s_first < 0) || (s_first > s_last)) { + if (info->flash_id == FLASH_UNKNOWN) { + printf("- missing\n"); + } else { + printf("- no sectors to erase\n"); + } + return 1; + } + + type = (info->flash_id & FLASH_VENDMASK); + if ((type != FLASH_MAN_INTEL)) { + printf("Can't erase unknown flash type %08lx - aborted\n", + info->flash_id); + return 1; + } + + prot = 0; + for (sect = s_first; sect <= s_last; ++sect) { + if (info->protect[sect]) { + prot++; + } + } + + if (prot) { + printf("- Warning: %d protected sectors will not be erased!\n", + prot); + } else { + printf("\n"); + } + + start = get_timer(0); + last = start; + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect <= s_last; sect++) { + if (info->protect[sect] == 0) { /* not protected */ + FPWV *addr = (FPWV *) (info->start[sect]); + FPW status; + + printf("Erasing sector %2d ... ", sect); + + /* arm simple, non interrupt dependent timer */ + reset_timer_masked(); + + *addr = (FPW) 0x00500050; /* clear status register */ + *addr = (FPW) 0x00200020; /* erase setup */ + *addr = (FPW) 0x00D000D0; /* erase confirm */ + + while (((status = + *addr) & (FPW) 0x00800080) != + (FPW) 0x00800080) { + if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) { + printf("Timeout\n"); + *addr = (FPW) 0x00B000B0; /* suspend erase */ + *addr = (FPW) 0x00FF00FF; /* reset to read mode */ + rcode = 1; + break; + } + } + + *addr = (FPW) 0x00500050; /* clear status register cmd. */ + *addr = (FPW) 0x00FF00FF; /* resest to read mode */ + + printf(" done\n"); + } + } + return rcode; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + * 4 - Flash not identified + */ + +int +write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) +{ + ulong cp, wp; + FPW data; + int count, i, l, rc, port_width; + + if (info->flash_id == FLASH_UNKNOWN) { + return 4; + } +/* get lower word aligned address */ +#ifdef FLASH_PORT_WIDTH16 + wp = (addr & ~1); + port_width = 2; +#else + wp = (addr & ~3); + port_width = 4; +#endif + + /* + * handle unaligned start bytes + */ + if ((l = addr - wp) != 0) { + data = 0; + for (i = 0, cp = wp; i < l; ++i, ++cp) { + data = (data << 8) | (*(uchar *) cp); + } + for (; i < port_width && cnt > 0; ++i) { + data = (data << 8) | *src++; + --cnt; + ++cp; + } + for (; cnt == 0 && i < port_width; ++i, ++cp) { + data = (data << 8) | (*(uchar *) cp); + } + + if ((rc = write_data(info, wp, SWAP(data))) != 0) { + return (rc); + } + wp += port_width; + } + + /* + * handle word aligned part + */ + count = 0; + while (cnt >= port_width) { + data = 0; + for (i = 0; i < port_width; ++i) { + data = (data << 8) | *src++; + } + if ((rc = write_data(info, wp, SWAP(data))) != 0) { + return (rc); + } + wp += port_width; + cnt -= port_width; + if (count++ > 0x800) { + spin_wheel(); + count = 0; + } + } + + if (cnt == 0) { + return (0); + } + + /* + * handle unaligned tail bytes + */ + data = 0; + for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) { + data = (data << 8) | *src++; + --cnt; + } + for (; i < port_width; ++i, ++cp) { + data = (data << 8) | (*(uchar *) cp); + } + + return (write_data(info, wp, SWAP(data))); +} + +/*----------------------------------------------------------------------- + * Write a word or halfword to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +static int +write_data(flash_info_t * info, ulong dest, FPW data) +{ + FPWV *addr = (FPWV *) dest; + ulong status; + int flag; + + /* Check if Flash is (sufficiently) erased */ + if ((*addr & data) != data) { + printf("not erased at %08lx (%x)\n", (ulong) addr, *addr); + return (2); + } + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + *addr = (FPW) 0x00400040; /* write setup */ + *addr = data; + + /* arm simple, non interrupt dependent timer */ + reset_timer_masked(); + + /* wait while polling the status register */ + while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) { + if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) { + *addr = (FPW) 0x00FF00FF; /* restore read mode */ + return (1); + } + } + + *addr = (FPW) 0x00FF00FF; /* restore read mode */ + + return (0); +} + +void inline +spin_wheel(void) +{ + static int p = 0; + static char w[] = "\\/-"; + + printf("\010%c", w[p]); + (++p == 3) ? (p = 0) : 0; +} diff --git a/board/gcplus/gcplus.c b/board/gcplus/gcplus.c new file mode 100644 index 0000000..06b6098 --- /dev/null +++ b/board/gcplus/gcplus.c @@ -0,0 +1,73 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * 2003-2004 (c) MontaVista Software, Inc. + * + * 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 <SA-1100.h> +/* ------------------------------------------------------------------------- */ + +/* + * Miscelaneous platform dependent initialisations + */ + +int +board_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + gd->bd->bi_arch_number = 29; /* ADS GraphicsClientPlus Board */ + + gd->bd->bi_boot_params = 0xc000003c; /* Weird address? */ + + /* Most of the ADS GCPlus I/O is connected to Static nCS2. + * So I'm brute forcing nCS2 timiming here for worst case. + */ + MSC1 &= ~0xFFFF; + MSC1 |= 0x8649; + + /* Nothing is connected to Static nCS4 or nCS5. But I'm using + * nCS4 as a paranoia safe guard to force nCS2, nOE; nWE high + * after accessing I/O via (non-VLIO) nCS2. What can I say, I'm + * paranoid and lack decent tools to alleviate my fear. I sure + * do wish I had a logic analyzer. : ( + */ + + MSC2 = 0xfff9fff9; + + return 0; +} + +int +dram_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE; + + return (0); +} diff --git a/board/gcplus/memsetup.S b/board/gcplus/memsetup.S new file mode 100644 index 0000000..02f5685 --- /dev/null +++ b/board/gcplus/memsetup.S @@ -0,0 +1,77 @@ +/* + * Memory Setup stuff - taken from blob memsetup.S + * + * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and + * Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl) + * 2003-2004 (c) MontaVista Software, Inc. + * + * 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 "config.h" +#include "version.h" + + + .globl memsetup +memsetup: + /* The ADS GC+ for Linux Boot Rom Ver. 1.73 does memory init for us. + * However the darn thing leaves the MMU enabled before handing control + * over to us. So we need to disable the MMU and we use memsetup + * to do it. + */ + +@ The following code segment was borrowed with gratitude from: +@ linux-2.4.19-rmk7/arch/arm/boot/compressed/head-sa1100.S + + @ Data cache might be active. + @ Be sure to flush kernel binary out of the cache, + @ whatever state it is, before it is turned off. + @ This is done by fetching through currently executed + @ memory to be sure we hit the same cache. + bic r2, pc, #0x1f + add r3, r2, #0x4000 @ 16 kb is quite enough... +1: ldr r0, [r2], #32 + teq r2, r3 + bne 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mcr p15, 0, r0, c7, c7, 0 @ flush I & D caches + + @ disabling MMU and caches + mrc p15, 0, r0, c1, c0, 0 @ read control reg + bic r0, r0, #0x0d @ clear WB, DC, MMU + bic r0, r0, #0x1000 @ clear Icache + mcr p15, 0, r0, c1, c0, 0 + + nop + nop + nop + nop + nop + + b 2f +2: + nop + nop + nop + nop + nop + + + mov pc, lr diff --git a/board/gcplus/u-boot.lds b/board/gcplus/u-boot.lds new file mode 100644 index 0000000..f625b48 --- /dev/null +++ b/board/gcplus/u-boot.lds @@ -0,0 +1,57 @@ +/* + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * 2003 (c) MontaVista Software, Inc. + * + * 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 + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + cpu/sa1100/start.o (.text) + *(.text) + } + + . = ALIGN(4); + .rodata : { *(.rodata) } + + . = ALIGN(4); + .data : { *(.data) } + + . = ALIGN(4); + .got : { *(.got) } + + + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + __bss_start = .; + .bss : { *(.bss) } + _end = .; +} |