1f34f2e426
LASAT's sysctl interface was broken, it failed a check during boot because a single entry had a sysctl number and the rest were unnumbered. When I fixed it I noticed that the whole sysctl file needed a spring clean, it was using mutexes where it wasn't needed (it's only needed to protect during writes to the EEPROM), so I moved that stuff out and generally cleaned the whole thing up. So now, LASAT's sysctl/proc interface is working again. Signed-off-by: Thomas Horsten <thomas@horsten.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
282 lines
7.0 KiB
C
282 lines
7.0 KiB
C
/*
|
|
* Thomas Horsten <thh@lasat.com>
|
|
* Copyright (C) 2000 LASAT Networks A/S.
|
|
*
|
|
* This program is free software; you can distribute it and/or modify it
|
|
* under the terms of the GNU General Public License (Version 2) as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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.
|
|
*
|
|
* Routines specific to the LASAT boards
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/crc32.h>
|
|
#include <asm/lasat/lasat.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/mutex.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/addrspace.h>
|
|
#include "at93c.h"
|
|
/* New model description table */
|
|
#include "lasat_models.h"
|
|
|
|
static DEFINE_MUTEX(lasat_eeprom_mutex);
|
|
|
|
#define EEPROM_CRC(data, len) (~crc32(~0, data, len))
|
|
|
|
struct lasat_info lasat_board_info;
|
|
|
|
int EEPROMRead(unsigned int pos, unsigned char *data, int len)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < len; i++)
|
|
*data++ = at93c_read(pos++);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int EEPROMWrite(unsigned int pos, unsigned char *data, int len)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < len; i++)
|
|
at93c_write(pos++, *data++);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void init_flash_sizes(void)
|
|
{
|
|
unsigned long *lb = lasat_board_info.li_flashpart_base;
|
|
unsigned long *ls = lasat_board_info.li_flashpart_size;
|
|
int i;
|
|
|
|
ls[LASAT_MTD_BOOTLOADER] = 0x40000;
|
|
ls[LASAT_MTD_SERVICE] = 0xC0000;
|
|
ls[LASAT_MTD_NORMAL] = 0x100000;
|
|
|
|
if (mips_machtype == MACH_LASAT_100) {
|
|
lasat_board_info.li_flash_base = 0x1e000000;
|
|
|
|
lb[LASAT_MTD_BOOTLOADER] = 0x1e400000;
|
|
|
|
if (lasat_board_info.li_flash_size > 0x200000) {
|
|
ls[LASAT_MTD_CONFIG] = 0x100000;
|
|
ls[LASAT_MTD_FS] = 0x500000;
|
|
}
|
|
} else {
|
|
lasat_board_info.li_flash_base = 0x10000000;
|
|
|
|
if (lasat_board_info.li_flash_size < 0x1000000) {
|
|
lb[LASAT_MTD_BOOTLOADER] = 0x10000000;
|
|
ls[LASAT_MTD_CONFIG] = 0x100000;
|
|
if (lasat_board_info.li_flash_size >= 0x400000)
|
|
ls[LASAT_MTD_FS] =
|
|
lasat_board_info.li_flash_size - 0x300000;
|
|
}
|
|
}
|
|
|
|
for (i = 1; i < LASAT_MTD_LAST; i++)
|
|
lb[i] = lb[i-1] + ls[i-1];
|
|
}
|
|
|
|
int lasat_init_board_info(void)
|
|
{
|
|
int c;
|
|
unsigned long crc;
|
|
unsigned long cfg0, cfg1;
|
|
const struct product_info *ppi;
|
|
int i_n_base_models = N_BASE_MODELS;
|
|
const char * const * i_txt_base_models = txt_base_models;
|
|
int i_n_prids = N_PRIDS;
|
|
|
|
memset(&lasat_board_info, 0, sizeof(lasat_board_info));
|
|
|
|
/* First read the EEPROM info */
|
|
EEPROMRead(0, (unsigned char *)&lasat_board_info.li_eeprom_info,
|
|
sizeof(struct lasat_eeprom_struct));
|
|
|
|
/* Check the CRC */
|
|
crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info),
|
|
sizeof(struct lasat_eeprom_struct) - 4);
|
|
|
|
if (crc != lasat_board_info.li_eeprom_info.crc32) {
|
|
printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM CRC does "
|
|
"not match calculated, attempting to soldier on...\n");
|
|
}
|
|
|
|
if (lasat_board_info.li_eeprom_info.version != LASAT_EEPROM_VERSION) {
|
|
printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM version "
|
|
"%d, wanted version %d, attempting to soldier on...\n",
|
|
(unsigned int)lasat_board_info.li_eeprom_info.version,
|
|
LASAT_EEPROM_VERSION);
|
|
}
|
|
|
|
cfg0 = lasat_board_info.li_eeprom_info.cfg[0];
|
|
cfg1 = lasat_board_info.li_eeprom_info.cfg[1];
|
|
|
|
if (LASAT_W0_DSCTYPE(cfg0) != 1) {
|
|
printk(KERN_WARNING "WARNING...\nWARNING...\n"
|
|
"Invalid configuration read from EEPROM, attempting to "
|
|
"soldier on...");
|
|
}
|
|
/* We have a valid configuration */
|
|
|
|
switch (LASAT_W0_SDRAMBANKSZ(cfg0)) {
|
|
case 0:
|
|
lasat_board_info.li_memsize = 0x0800000;
|
|
break;
|
|
case 1:
|
|
lasat_board_info.li_memsize = 0x1000000;
|
|
break;
|
|
case 2:
|
|
lasat_board_info.li_memsize = 0x2000000;
|
|
break;
|
|
case 3:
|
|
lasat_board_info.li_memsize = 0x4000000;
|
|
break;
|
|
case 4:
|
|
lasat_board_info.li_memsize = 0x8000000;
|
|
break;
|
|
default:
|
|
lasat_board_info.li_memsize = 0;
|
|
}
|
|
|
|
switch (LASAT_W0_SDRAMBANKS(cfg0)) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
lasat_board_info.li_memsize *= 2;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (LASAT_W0_BUSSPEED(cfg0)) {
|
|
case 0x0:
|
|
lasat_board_info.li_bus_hz = 60000000;
|
|
break;
|
|
case 0x1:
|
|
lasat_board_info.li_bus_hz = 66000000;
|
|
break;
|
|
case 0x2:
|
|
lasat_board_info.li_bus_hz = 66666667;
|
|
break;
|
|
case 0x3:
|
|
lasat_board_info.li_bus_hz = 80000000;
|
|
break;
|
|
case 0x4:
|
|
lasat_board_info.li_bus_hz = 83333333;
|
|
break;
|
|
case 0x5:
|
|
lasat_board_info.li_bus_hz = 100000000;
|
|
break;
|
|
}
|
|
|
|
switch (LASAT_W0_CPUCLK(cfg0)) {
|
|
case 0x0:
|
|
lasat_board_info.li_cpu_hz =
|
|
lasat_board_info.li_bus_hz;
|
|
break;
|
|
case 0x1:
|
|
lasat_board_info.li_cpu_hz =
|
|
lasat_board_info.li_bus_hz +
|
|
(lasat_board_info.li_bus_hz >> 1);
|
|
break;
|
|
case 0x2:
|
|
lasat_board_info.li_cpu_hz =
|
|
lasat_board_info.li_bus_hz +
|
|
lasat_board_info.li_bus_hz;
|
|
break;
|
|
case 0x3:
|
|
lasat_board_info.li_cpu_hz =
|
|
lasat_board_info.li_bus_hz +
|
|
lasat_board_info.li_bus_hz +
|
|
(lasat_board_info.li_bus_hz >> 1);
|
|
break;
|
|
case 0x4:
|
|
lasat_board_info.li_cpu_hz =
|
|
lasat_board_info.li_bus_hz +
|
|
lasat_board_info.li_bus_hz +
|
|
lasat_board_info.li_bus_hz;
|
|
break;
|
|
}
|
|
|
|
/* Flash size */
|
|
switch (LASAT_W1_FLASHSIZE(cfg1)) {
|
|
case 0:
|
|
lasat_board_info.li_flash_size = 0x200000;
|
|
break;
|
|
case 1:
|
|
lasat_board_info.li_flash_size = 0x400000;
|
|
break;
|
|
case 2:
|
|
lasat_board_info.li_flash_size = 0x800000;
|
|
break;
|
|
case 3:
|
|
lasat_board_info.li_flash_size = 0x1000000;
|
|
break;
|
|
case 4:
|
|
lasat_board_info.li_flash_size = 0x2000000;
|
|
break;
|
|
}
|
|
|
|
init_flash_sizes();
|
|
|
|
lasat_board_info.li_bmid = LASAT_W0_BMID(cfg0);
|
|
lasat_board_info.li_prid = lasat_board_info.li_eeprom_info.prid;
|
|
if (lasat_board_info.li_prid == 0xffff || lasat_board_info.li_prid == 0)
|
|
lasat_board_info.li_prid = lasat_board_info.li_bmid;
|
|
|
|
/* Base model stuff */
|
|
if (lasat_board_info.li_bmid > i_n_base_models)
|
|
lasat_board_info.li_bmid = i_n_base_models;
|
|
strcpy(lasat_board_info.li_bmstr,
|
|
i_txt_base_models[lasat_board_info.li_bmid]);
|
|
|
|
/* Product ID dependent values */
|
|
c = lasat_board_info.li_prid;
|
|
if (c >= i_n_prids) {
|
|
strcpy(lasat_board_info.li_namestr, "Unknown Model");
|
|
strcpy(lasat_board_info.li_typestr, "Unknown Type");
|
|
} else {
|
|
ppi = &vendor_info_table[0].vi_product_info[c];
|
|
strcpy(lasat_board_info.li_namestr, ppi->pi_name);
|
|
if (ppi->pi_type)
|
|
strcpy(lasat_board_info.li_typestr, ppi->pi_type);
|
|
else
|
|
sprintf(lasat_board_info.li_typestr, "%d", 10 * c);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void lasat_write_eeprom_info(void)
|
|
{
|
|
unsigned long crc;
|
|
|
|
mutex_lock(&lasat_eeprom_mutex);
|
|
|
|
/* Generate the CRC */
|
|
crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info),
|
|
sizeof(struct lasat_eeprom_struct) - 4);
|
|
lasat_board_info.li_eeprom_info.crc32 = crc;
|
|
|
|
/* Write the EEPROM info */
|
|
EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info,
|
|
sizeof(struct lasat_eeprom_struct));
|
|
|
|
mutex_unlock(&lasat_eeprom_mutex);
|
|
}
|