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Diffstat (limited to 'board/purple/purple.c')
| -rw-r--r-- | board/purple/purple.c | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/board/purple/purple.c b/board/purple/purple.c deleted file mode 100644 index 4e9e700..0000000 --- a/board/purple/purple.c +++ /dev/null @@ -1,284 +0,0 @@ -/* - * (C) Copyright 2003 - * 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 <command.h> -#include <netdev.h> -#include <asm/inca-ip.h> -#include <asm/regdef.h> -#include <asm/mipsregs.h> -#include <asm/io.h> -#include <asm/addrspace.h> -#include <asm/cacheops.h> -#include <asm/reboot.h> - -#include "sconsole.h" - -#define cache_unroll(base,op) \ - __asm__ __volatile__(" \ - .set noreorder; \ - .set mips3; \ - cache %1, (%0); \ - .set mips0; \ - .set reorder" \ - : \ - : "r" (base), \ - "i" (op)); - -typedef void (*FUNCPTR)(ulong *source, ulong *destination, ulong nlongs); - -extern void asc_serial_init (void); -extern void asc_serial_putc (char); -extern void asc_serial_puts (const char *); -extern int asc_serial_getc (void); -extern int asc_serial_tstc (void); -extern void asc_serial_setbrg (void); - -void _machine_restart(void) -{ - void (*f)(void) = (void *) 0xbfc00000; - - f(); -} - -static void sdram_timing_init (ulong size) -{ - register uint pass; - register uint done; - register uint count; - register uint p0, p1, p2, p3, p4; - register uint addr; - -#define WRITE_MC_IOGP_1 *(uint *)0xbf800800 = (p1<<14)+(p2<<13)+(p4<<8)+(p0<<4)+p3; -#define WRITE_MC_IOGP_2 *(uint *)0xbf800800 = (p1<<14)+(p2<<13)+((p4-16)<<8)+(p0<<4)+p3; - - done = 0; - p0 = 2; - while (p0 < 4 && done == 0) { - p1 = 0; - while (p1 < 2 && done == 0) { - p2 = 0; - while (p2 < 2 && done == 0) { - p3 = 0; - while (p3 < 16 && done == 0) { - count = 0; - p4 = 0; - while (p4 < 32 && done == 0) { - WRITE_MC_IOGP_1; - - for (addr = CKSEG1 + 0x4000; - addr < CKSEG1ADDR (size); - addr = addr + 4) { - *(uint *) addr = 0xaa55aa55; - } - - pass = 1; - - for (addr = CKSEG1 + 0x4000; - addr < CKSEG1ADDR (size) && pass == 1; - addr = addr + 4) { - if (*(uint *) addr != 0xaa55aa55) - pass = 0; - } - - if (pass == 1) { - count++; - } else { - count = 0; - } - - if (count == 32) { - WRITE_MC_IOGP_2; - done = 1; - } - p4++; - } - p3++; - } - p2++; - } - p1++; - } - p0++; - if (p0 == 1) - p0++; - } -} - -phys_size_t initdram(int board_type) -{ - /* The only supported number of SDRAM banks is 4. - */ -#define CONFIG_SYS_NB 4 - - ulong cfgpb0 = *INCA_IP_SDRAM_MC_CFGPB0; - ulong cfgdw = *INCA_IP_SDRAM_MC_CFGDW; - int cols = cfgpb0 & 0xF; - int rows = (cfgpb0 & 0xF0) >> 4; - int dw = cfgdw & 0xF; - ulong size = (1 << (rows + cols)) * (1 << (dw - 1)) * CONFIG_SYS_NB; - void (* sdram_init) (ulong); - - sdram_init = (void (*)(ulong)) CKSEG0ADDR(&sdram_timing_init); - - sdram_init(0x10000); - - return size; -} - -int checkboard (void) -{ - - unsigned long chipid = *(unsigned long *)0xB800C800; - - printf ("Board: Purple PLB 2800 chip version %ld, ", chipid & 0xF); - - printf("CPU Speed %d MHz\n", CPU_CLOCK_RATE/1000000); - - set_io_port_base(0); - - return 0; -} - -int misc_init_r (void) -{ - asc_serial_init (); - - sconsole_putc = asc_serial_putc; - sconsole_puts = asc_serial_puts; - sconsole_getc = asc_serial_getc; - sconsole_tstc = asc_serial_tstc; - sconsole_setbrg = asc_serial_setbrg; - - sconsole_flush (); - return (0); -} - -/******************************************************************************* -* -* copydwords - copy one buffer to another a long at a time -* -* This routine copies the first <nlongs> longs from <source> to <destination>. -*/ -static void copydwords (ulong *source, ulong *destination, ulong nlongs) -{ - ulong temp,temp1; - ulong *dstend = destination + nlongs; - - while (destination < dstend) { - temp = *source++; - /* dummy read from sdram */ - temp1 = *(ulong *)0xa0000000; - /* avoid optimization from compliler */ - *(ulong *)0xbf0081f8 = temp1 + temp; - *destination++ = temp; - - } -} - -/******************************************************************************* -* -* copyLongs - copy one buffer to another a long at a time -* -* This routine copies the first <nlongs> longs from <source> to <destination>. -*/ -static void copyLongs (ulong *source, ulong *destination, ulong nlongs) -{ - FUNCPTR absEntry; - - absEntry = (FUNCPTR)(0xbf008000+((ulong)copydwords & 0x7)); - absEntry(source, destination, nlongs); -} - -/******************************************************************************* -* -* programLoad - load program into ram -* -* This routine load copydwords into ram -* -*/ -static void programLoad(void) -{ - FUNCPTR absEntry; - ulong *src,*dst; - - src = (ulong *)(CONFIG_SYS_TEXT_BASE + 0x428); - dst = (ulong *)0xbf0081d0; - - absEntry = (FUNCPTR)(CONFIG_SYS_TEXT_BASE + 0x400); - absEntry(src,dst,0x6); - - src = (ulong *)((ulong)copydwords & 0xfffffff8); - dst = (ulong *)0xbf008000; - - absEntry(src,dst,0x38); -} - -/******************************************************************************* -* -* copy_code - copy u-boot image from flash to RAM -* -* This routine is needed to solve flash problems on this board -* -*/ -void copy_code (ulong dest_addr) -{ - extern long uboot_end_data; - unsigned long start; - unsigned long end; - - /* load copydwords into ram - */ - programLoad(); - - /* copy u-boot code - */ - copyLongs((ulong *)CONFIG_SYS_MONITOR_BASE, - (ulong *)dest_addr, - ((ulong)&uboot_end_data - CONFIG_SYS_MONITOR_BASE + 3) / 4); - - - /* flush caches - */ - - start = CKSEG0; - end = start + CONFIG_SYS_DCACHE_SIZE; - while(start < end) { - cache_unroll(start,Index_Writeback_Inv_D); - start += CONFIG_SYS_CACHELINE_SIZE; - } - - start = CKSEG0; - end = start + CONFIG_SYS_ICACHE_SIZE; - while(start < end) { - cache_unroll(start,Index_Invalidate_I); - start += CONFIG_SYS_CACHELINE_SIZE; - } -} - -#ifdef CONFIG_PLB2800_ETHER -int board_eth_init(bd_t *bis) -{ - return plb2800_eth_initialize(bis); -} -#endif |