diff options
Diffstat (limited to 'board/xm250')
| -rw-r--r-- | board/xm250/Makefile | 47 | ||||
| -rw-r--r-- | board/xm250/config.mk | 35 | ||||
| -rw-r--r-- | board/xm250/flash.c | 536 | ||||
| -rw-r--r-- | board/xm250/memsetup.S | 519 | ||||
| -rw-r--r-- | board/xm250/u-boot.lds | 55 | ||||
| -rw-r--r-- | board/xm250/xm250.c | 91 |
6 files changed, 1283 insertions, 0 deletions
diff --git a/board/xm250/Makefile b/board/xm250/Makefile new file mode 100644 index 00000000000..3572f726837 --- /dev/null +++ b/board/xm250/Makefile @@ -0,0 +1,47 @@ +# +# (C) Copyright 2000-2004 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# 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 := xm250.o flash.o +SOBJS := memsetup.o + +$(LIB): $(OBJS) $(SOBJS) + $(AR) crv $@ $^ + +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/xm250/config.mk b/board/xm250/config.mk new file mode 100644 index 00000000000..8ce0c484148 --- /dev/null +++ b/board/xm250/config.mk @@ -0,0 +1,35 @@ +# +# (C) Copyright 2003-2004 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# 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 +# + +# +# MicroSys XM250 board: +# + + +# This is the address where U-Boot lives in flash: +#TEXT_BASE = 0 + +# FIXME: armboot does only work correctly when being compiled +# for the addresses _after_ relocation to RAM!! Otherwhise the +# .bss segment is assumed in flash... +TEXT_BASE = 0xA3F80000 diff --git a/board/xm250/flash.c b/board/xm250/flash.c new file mode 100644 index 00000000000..aab47a0a55c --- /dev/null +++ b/board/xm250/flash.c @@ -0,0 +1,536 @@ +/* + * (C) Copyright 2001 + * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net + * + * (C) Copyright 2001-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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 + +/* Intel-compatible flash ID */ +#define INTEL_COMPAT 0x00890089 +#define INTEL_ALT 0x00B000B0 + +/* Intel-compatible flash commands */ +#define INTEL_PROGRAM 0x00100010 +#define INTEL_ERASE 0x00200020 +#define INTEL_CLEAR 0x00500050 +#define INTEL_LOCKBIT 0x00600060 +#define INTEL_PROTECT 0x00010001 +#define INTEL_STATUS 0x00700070 +#define INTEL_READID 0x00900090 +#define INTEL_CONFIRM 0x00D000D0 +#define INTEL_RESET 0xFFFFFFFF + +/* Intel-compatible flash status bits */ +#define INTEL_FINISHED 0x00800080 +#define INTEL_OK 0x00800080 + +#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; + case 1: + flash_get_size ((FPW *) PHYS_FLASH_2, &flash_info[i]); + flash_get_offsets (PHYS_FLASH_2, &flash_info[i]); + break; + default: + panic ("configured to 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_28F640J3A: + printf ("28F640J3A\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; /* => 32 MB */ + + case (FPW) INTEL_ID_28F640J3A: + info->flash_id += FLASH_28F640J3A; + 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 = 0x00500050; /* clear status register cmd. */ + *addr = 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 (%lx)\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; +} + +/*----------------------------------------------------------------------- + * Set/Clear sector's lock bit, returns: + * 0 - OK + * 1 - Error (timeout, voltage problems, etc.) + */ +int flash_real_protect(flash_info_t *info, long sector, int prot) +{ + int i; + int rc = 0; + vu_long *addr = (vu_long *)(info->start[sector]); + int flag = disable_interrupts(); + + *addr = INTEL_CLEAR; /* Clear status register */ + if (prot) { /* Set sector lock bit */ + *addr = INTEL_LOCKBIT; /* Sector lock bit */ + *addr = INTEL_PROTECT; /* set */ + } + else { /* Clear sector lock bit */ + *addr = INTEL_LOCKBIT; /* All sectors lock bits */ + *addr = INTEL_CONFIRM; /* clear */ + } + + reset_timer_masked (); + + while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) { + if (get_timer_masked () > CFG_FLASH_UNLOCK_TOUT) { + printf("Flash lock bit operation timed out\n"); + rc = 1; + break; + } + } + + if (*addr != INTEL_OK) { + printf("Flash lock bit operation failed at %08X, CSR=%08X\n", + (uint)addr, (uint)*addr); + rc = 1; + } + + if (!rc) + info->protect[sector] = prot; + + /* + * Clear lock bit command clears all sectors lock bits, so + * we have to restore lock bits of protected sectors. + */ + if (!prot) + { + for (i = 0; i < info->sector_count; i++) + { + if (info->protect[i]) + { + reset_timer_masked (); + addr = (vu_long *)(info->start[i]); + *addr = INTEL_LOCKBIT; /* Sector lock bit */ + *addr = INTEL_PROTECT; /* set */ + while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) + { + if (get_timer_masked () > CFG_FLASH_UNLOCK_TOUT) + { + printf("Flash lock bit operation timed out\n"); + rc = 1; + break; + } + } + } + } + } + + if (flag) + enable_interrupts(); + + *addr = INTEL_RESET; /* Reset to read array mode */ + + return rc; +} diff --git a/board/xm250/memsetup.S b/board/xm250/memsetup.S new file mode 100644 index 00000000000..f68e8433930 --- /dev/null +++ b/board/xm250/memsetup.S @@ -0,0 +1,519 @@ +/* + * Most of this taken from Redboot hal_platform_setup.h with cleanup + * + * 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> +#include <asm/arch/pxa-regs.h> + +DRAM_SIZE: .long CFG_DRAM_SIZE + +/* wait for coprocessor write complete */ + .macro CPWAIT reg + mrc p15,0,\reg,c2,c0,0 + mov \reg,\reg + sub pc,pc,#4 + .endm +/* + .macro SET_LED val + ldr r6, =CRADLE_LED_CLR_REG + ldr r7, =0 + str r7, [r6] + ldr r6, =CRADLE_LED_SET_REG + ldr r7, =\val + str r7, [r6] + .endm +*/ + +.globl memsetup +memsetup: + + mov r10, lr + + /* Set up GPIO pins first */ + + ldr r0, =GPSR0 + ldr r1, =CFG_GPSR0_VAL + str r1, [r0] + + ldr r0, =GPSR1 + ldr r1, =CFG_GPSR1_VAL + str r1, [r0] + + ldr r0, =GPSR2 + ldr r1, =CFG_GPSR2_VAL + str r1, [r0] + + ldr r0, =GPCR0 + ldr r1, =CFG_GPCR0_VAL + str r1, [r0] + + ldr r0, =GPCR1 + ldr r1, =CFG_GPCR1_VAL + str r1, [r0] + + ldr r0, =GPCR2 + ldr r1, =CFG_GPCR2_VAL + str r1, [r0] + + ldr r0, =GRER0 + ldr r1, =CFG_GRER0_VAL + str r1, [r0] + + ldr r0, =GRER1 + ldr r1, =CFG_GRER1_VAL + str r1, [r0] + + ldr r0, =GRER2 + ldr r1, =CFG_GRER2_VAL + str r1, [r0] + + ldr r0, =GFER0 + ldr r1, =CFG_GFER0_VAL + str r1, [r0] + + ldr r0, =GFER1 + ldr r1, =CFG_GFER1_VAL + str r1, [r0] + + ldr r0, =GFER2 + ldr r1, =CFG_GFER2_VAL + str r1, [r0] + + ldr r0, =GPDR0 + ldr r1, =CFG_GPDR0_VAL + str r1, [r0] + + ldr r0, =GPDR1 + ldr r1, =CFG_GPDR1_VAL + str r1, [r0] + + ldr r0, =GPDR2 + ldr r1, =CFG_GPDR2_VAL + str r1, [r0] + + ldr r0, =GAFR0_L + ldr r1, =CFG_GAFR0_L_VAL + str r1, [r0] + + ldr r0, =GAFR0_U + ldr r1, =CFG_GAFR0_U_VAL + str r1, [r0] + + ldr r0, =GAFR1_L + ldr r1, =CFG_GAFR1_L_VAL + str r1, [r0] + + ldr r0, =GAFR1_U + ldr r1, =CFG_GAFR1_U_VAL + str r1, [r0] + + ldr r0, =GAFR2_L + ldr r1, =CFG_GAFR2_L_VAL + str r1, [r0] + + ldr r0, =GAFR2_U + ldr r1, =CFG_GAFR2_U_VAL + str r1, [r0] + + /* enable GPIO pins */ + ldr r0, =PSSR + ldr r1, =CFG_PSSR_VAL + str r1, [r0] + + /* SET_LED 1 */ + + ldr r3, =MSC1 /* low - bank 2 Lubbock Registers / SRAM */ + ldr r2, =CFG_MSC1_VAL /* high - bank 3 Ethernet Controller */ + str r2, [r3] /* need to set MSC1 before trying to write to the HEX LEDs */ + ldr r2, [r3] /* need to read it back to make sure the value latches (see MSC section of manual) */ + + +/********************************************************************* + * Initlialize Memory Controller + * + * See PXA250 Operating System Developer's Guide + * + * pause for 200 uSecs- allow internal clocks to settle + * *Note: only need this if hard reset... doing it anyway for now + */ + + @ Step 1 + @ ---- Wait 200 usec + ldr r3, =OSCR @ reset the OS Timer Count to zero + mov r2, #0 + str r2, [r3] + ldr r4, =0x300 @ really 0x2E1 is about 200usec, so 0x300 should be plenty +1: + ldr r2, [r3] + cmp r4, r2 + bgt 1b + + /* SET_LED 2 */ + +mem_init: + @ get memory controller base address + ldr r1, =MEMC_BASE + + +@**************************************************************************** +@ Step 2 +@ + + @ Step 2a + @ write msc0, read back to ensure data latches + @ + ldr r2, =CFG_MSC0_VAL + str r2, [r1, #MSC0_OFFSET] + ldr r2, [r1, #MSC0_OFFSET] + + @ write msc1 + ldr r2, =CFG_MSC1_VAL + str r2, [r1, #MSC1_OFFSET] + ldr r2, [r1, #MSC1_OFFSET] + + @ write msc2 + ldr r2, =CFG_MSC2_VAL + str r2, [r1, #MSC2_OFFSET] + ldr r2, [r1, #MSC2_OFFSET] + + @ Step 2b + @ write mecr + ldr r2, =CFG_MECR_VAL + str r2, [r1, #MECR_OFFSET] + + @ write mcmem0 + ldr r2, =CFG_MCMEM0_VAL + str r2, [r1, #MCMEM0_OFFSET] + + @ write mcmem1 + ldr r2, =CFG_MCMEM1_VAL + str r2, [r1, #MCMEM1_OFFSET] + + @ write mcatt0 + ldr r2, =CFG_MCATT0_VAL + str r2, [r1, #MCATT0_OFFSET] + + @ write mcatt1 + ldr r2, =CFG_MCATT1_VAL + str r2, [r1, #MCATT1_OFFSET] + + @ write mcio0 + ldr r2, =CFG_MCIO0_VAL + str r2, [r1, #MCIO0_OFFSET] + + @ write mcio1 + ldr r2, =CFG_MCIO1_VAL + str r2, [r1, #MCIO1_OFFSET] + + /*SET_LED 3 */ + + @ Step 2c + @ fly-by-dma is defeatured on this part + @ write flycnfg + @ldr r2, =CFG_FLYCNFG_VAL + @str r2, [r1, #FLYCNFG_OFFSET] + +/* FIXME Does this sequence really make sense */ +#ifdef REDBOOT_WAY + @ Step 2d + @ get the mdrefr settings + ldr r3, =CFG_MDREFR_VAL + + @ extract DRI field (we need a valid DRI field) + @ + ldr r2, =0xFFF + + @ valid DRI field in r3 + @ + and r3, r3, r2 + + @ get the reset state of MDREFR + @ + ldr r4, [r1, #MDREFR_OFFSET] + + @ clear the DRI field + @ + bic r4, r4, r2 + + @ insert the valid DRI field loaded above + @ + orr r4, r4, r3 + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + + @ *Note: preserve the mdrefr value in r4 * + + /*SET_LED 4 */ + +@**************************************************************************** +@ Step 3 +@ +@ NO SRAM + + mov pc, r10 + + +@**************************************************************************** +@ Step 4 +@ + + @ Assumes previous mdrefr value in r4, if not then read current mdrefr + + @ clear the free-running clock bits + @ (clear K0Free, K1Free, K2Free + @ + bic r4, r4, #(0x00800000 | 0x01000000 | 0x02000000) + + @ set K0RUN for CPLD clock + @ + orr r4, r4, #0x00002000 + + @ set K1RUN if bank 0 installed + @ + orr r4, r4, #0x00010000 + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + ldr r4, [r1, #MDREFR_OFFSET] + + @ deassert SLFRSH + @ + bic r4, r4, #0x00400000 + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + + @ assert E1PIN + @ + orr r4, r4, #0x00008000 + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + ldr r4, [r1, #MDREFR_OFFSET] + nop + nop +#else + @ Step 2d + @ get the mdrefr settings + ldr r4, =CFG_MDREFR_VAL + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + + @ Step 4 + + @ set K0RUN for FLASH clock + @ + orr r4, r4, #0x00002000 + + @ set K1RUN for bank DRAM 0 + @ + orr r4, r4, #0x00010000 + + @ set K2RUN for bank PLD + @ + orr r4, r4, #0x00040000 + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + ldr r4, [r1, #MDREFR_OFFSET] + + @ deassert SLFRSH + @ + bic r4, r4, #0x00400000 + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + + @ assert E1PIN + @ + orr r4, r4, #0x00008000 + + @ write back mdrefr + @ + str r4, [r1, #MDREFR_OFFSET] + ldr r4, [r1, #MDREFR_OFFSET] + nop + nop +#endif + + @ Step 4d + @ fetch platform value of mdcnfg + @ + ldr r2, =CFG_MDCNFG_VAL + + @ disable all sdram banks + @ + bic r2, r2, #(MDCNFG_DE0 | MDCNFG_DE1) + bic r2, r2, #(MDCNFG_DE2 | MDCNFG_DE3) + + @ program banks 0/1 for bus width + @ + bic r2, r2, #MDCNFG_DWID0 @0=32-bit + + @ write initial value of mdcnfg, w/o enabling sdram banks + @ + str r2, [r1, #MDCNFG_OFFSET] + + @ Step 4e + @ pause for 200 uSecs + @ + ldr r3, =OSCR @ reset the OS Timer Count to zero + mov r2, #0 + str r2, [r3] + ldr r4, =0x300 @ really 0x2E1 is about 200usec, so 0x300 should be plenty +1: + ldr r2, [r3] + cmp r4, r2 + bgt 1b + + /*SET_LED 5 */ + + /* Why is this here??? */ + mov r0, #0x78 @turn everything off + mcr p15, 0, r0, c1, c0, 0 @(caches off, MMU off, etc.) + + @ Step 4f + @ Access memory *not yet enabled* for CBR refresh cycles (8) + @ - CBR is generated for all banks + + ldr r2, =CFG_DRAM_BASE + str r2, [r2] + str r2, [r2] + str r2, [r2] + str r2, [r2] + str r2, [r2] + str r2, [r2] + str r2, [r2] + str r2, [r2] + + @ Step 4g + @get memory controller base address + @ + ldr r1, =MEMC_BASE + + @fetch current mdcnfg value + @ + ldr r3, [r1, #MDCNFG_OFFSET] + + @enable sdram bank 0 if installed (must do for any populated bank) + @ + orr r3, r3, #MDCNFG_DE0 + + @write back mdcnfg, enabling the sdram bank(s) + @ + str r3, [r1, #MDCNFG_OFFSET] + + @ Step 4h + @ write mdmrs + @ + ldr r2, =CFG_MDMRS_VAL + str r2, [r1, #MDMRS_OFFSET] + + @ Done Memory Init + + /*SET_LED 6 */ + + @******************************************************************** + @ Disable (mask) all interrupts at the interrupt controller + @ + + @ clear the interrupt level register (use IRQ, not FIQ) + @ + mov r1, #0 + ldr r2, =ICLR + str r1, [r2] + + @ Set interrupt mask register + @ + ldr r1, =CFG_ICMR_VAL + ldr r2, =ICMR + str r1, [r2] + + @ ******************************************************************** + @ Disable the peripheral clocks, and set the core clock + @ + + @ Turn Off ALL on-chip peripheral clocks for re-configuration + @ + ldr r1, =CKEN + mov r2, #0 + str r2, [r1] + + @ set core clocks + @ + ldr r2, =CFG_CCCR_VAL + ldr r1, =CCCR + str r2, [r1] + +#ifdef ENABLE32KHZ + @ enable the 32Khz oscillator for RTC and PowerManager + @ + ldr r1, =OSCC + mov r2, #OSCC_OON + str r2, [r1] + + @ NOTE: spin here until OSCC.OOK get set, + @ meaning the PLL has settled. + @ +60: + ldr r2, [r1] + ands r2, r2, #1 + beq 60b +#endif + + @ Turn on needed clocks + @ + ldr r1, =CKEN + ldr r2, =CFG_CKEN_VAL + str r2, [r1] + + /*SET_LED 7 */ + +/* Is this needed???? */ +#define NODEBUG +#ifdef NODEBUG + /*Disable software and data breakpoints */ + mov r0,#0 + mcr p15,0,r0,c14,c8,0 /* ibcr0 */ + mcr p15,0,r0,c14,c9,0 /* ibcr1 */ + mcr p15,0,r0,c14,c4,0 /* dbcon */ + + /*Enable all debug functionality */ + mov r0,#0x80000000 + mcr p14,0,r0,c10,c0,0 /* dcsr */ + +#endif + + /*SET_LED 8 */ + + mov pc, r10 + +@ End memsetup diff --git a/board/xm250/u-boot.lds b/board/xm250/u-boot.lds new file mode 100644 index 00000000000..e0b0514713f --- /dev/null +++ b/board/xm250/u-boot.lds @@ -0,0 +1,55 @@ +/* + * (C) Copyright 2000-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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/pxa/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 = .; +} diff --git a/board/xm250/xm250.c b/board/xm250/xm250.c new file mode 100644 index 00000000000..2a4348dac23 --- /dev/null +++ b/board/xm250/xm250.c @@ -0,0 +1,91 @@ +/* + * (C) Copyright 2002 + * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * 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/arch/pxa-regs.h> +#include <common.h> + +/* ------------------------------------------------------------------------- */ + +/* local prototypes */ + +inline void sleep (int i); + +inline void +/**********************************************************/ +sleep (int i) +/**********************************************************/ +{ + while (i--) { + udelay (1000000); + } +} + +/* + * Miscelaneous platform dependent initialisations + */ + +int +/**********************************************************/ +board_post_init (void) +/**********************************************************/ +{ + return (0); +} + +int +/**********************************************************/ +board_init (void) +/**********************************************************/ +{ + DECLARE_GLOBAL_DATA_PTR; + /* arch number of MicroSys XM250 */ + gd->bd->bi_arch_number = 444; + + /* adress of boot parameters */ + gd->bd->bi_boot_params = 0xa0000100; + + 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; + gd->bd->bi_dram[2].start = PHYS_SDRAM_3; + gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE; + gd->bd->bi_dram[3].start = PHYS_SDRAM_4; + gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE; + + return (0); +} |