06cf5583fd
- use RTC_CLASS instead of GEN_RTC - get rid of ds1216 in favour of a RTC_CLASS driver - use correct console device for older RM400 - use physical addresses for 82596 device - use 128 byte L1 cache line size (this is needed because most of the SNI caches are using 128 L2 cache lines) Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
250 lines
5.6 KiB
C
250 lines
5.6 KiB
C
/*
|
|
* Big Endian PROM code for SNI RM machines
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org)
|
|
* Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
|
|
*/
|
|
|
|
#define DEBUG
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/string.h>
|
|
#include <linux/console.h>
|
|
|
|
#include <asm/addrspace.h>
|
|
#include <asm/sni.h>
|
|
#include <asm/mipsprom.h>
|
|
#include <asm/bootinfo.h>
|
|
|
|
/* special SNI prom calls */
|
|
/*
|
|
* This does not exist in all proms - SINIX compares
|
|
* the prom env variable "version" against "2.0008"
|
|
* or greater. If lesser it tries to probe interesting
|
|
* registers
|
|
*/
|
|
#define PROM_GET_MEMCONF 58
|
|
|
|
#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
|
|
#define PROM_ENTRY(x) (PROM_VEC + (x))
|
|
|
|
|
|
static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR);
|
|
|
|
void prom_putchar(char c)
|
|
{
|
|
__prom_putchar(c);
|
|
}
|
|
|
|
static char *(*__prom_getenv)(char *) = (char *(*)(char *))PROM_ENTRY(PROM_GETENV);
|
|
static void (*__prom_get_memconf)(void *) = (void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF);
|
|
|
|
char *prom_getenv (char *s)
|
|
{
|
|
return __prom_getenv(s);
|
|
}
|
|
|
|
void __init prom_free_prom_memory(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* /proc/cpuinfo system type
|
|
*
|
|
*/
|
|
static const char *systype = "Unknown";
|
|
const char *get_system_type(void)
|
|
{
|
|
return systype;
|
|
}
|
|
|
|
#define SNI_IDPROM_BASE 0xbff00000
|
|
#define SNI_IDPROM_MEMSIZE (SNI_IDPROM_BASE+0x28) /* Memsize in 16MB quantities */
|
|
#define SNI_IDPROM_BRDTYPE (SNI_IDPROM_BASE+0x29) /* Board Type */
|
|
#define SNI_IDPROM_CPUTYPE (SNI_IDPROM_BASE+0x30) /* CPU Type */
|
|
|
|
#define SNI_IDPROM_SIZE 0x1000
|
|
|
|
#ifdef DEBUG
|
|
static void sni_idprom_dump(void)
|
|
{
|
|
int i;
|
|
|
|
pr_debug("SNI IDProm dump:\n");
|
|
for (i = 0; i < 256; i++) {
|
|
if (i%16 == 0)
|
|
pr_debug("%04x ", i);
|
|
|
|
printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i));
|
|
|
|
if (i % 16 == 15)
|
|
printk("\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void sni_mem_init(void )
|
|
{
|
|
int i, memsize;
|
|
struct membank {
|
|
u32 size;
|
|
u32 base;
|
|
u32 size2;
|
|
u32 pad1;
|
|
u32 pad2;
|
|
} memconf[8];
|
|
|
|
/* MemSIZE from prom in 16MByte chunks */
|
|
memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
|
|
|
|
pr_debug("IDProm memsize: %lu MByte\n", memsize);
|
|
|
|
/* get memory bank layout from prom */
|
|
__prom_get_memconf(&memconf);
|
|
|
|
pr_debug("prom_get_mem_conf memory configuration:\n");
|
|
for (i = 0;i < 8 && memconf[i].size; i++) {
|
|
if (sni_brd_type == SNI_BRD_PCI_TOWER ||
|
|
sni_brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
|
|
if (memconf[i].base >= 0x20000000 &&
|
|
memconf[i].base < 0x30000000) {
|
|
memconf[i].base -= 0x20000000;
|
|
}
|
|
}
|
|
pr_debug("Bank%d: %08x @ %08x\n", i,
|
|
memconf[i].size, memconf[i].base);
|
|
add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM);
|
|
}
|
|
}
|
|
|
|
static void __init sni_console_setup(void)
|
|
{
|
|
char *ctype;
|
|
char *cdev;
|
|
char *baud;
|
|
int port;
|
|
static char options[8];
|
|
|
|
cdev = prom_getenv ("console_dev");
|
|
if (strncmp (cdev, "tty", 3) == 0) {
|
|
ctype = prom_getenv ("console");
|
|
switch (*ctype) {
|
|
default:
|
|
case 'l':
|
|
port = 0;
|
|
baud = prom_getenv("lbaud");
|
|
break;
|
|
case 'r':
|
|
port = 1;
|
|
baud = prom_getenv("rbaud");
|
|
break;
|
|
}
|
|
if (baud)
|
|
strcpy(options, baud);
|
|
if (strncmp (cdev, "tty552", 6) == 0)
|
|
add_preferred_console("ttyS", port, baud ? options : NULL);
|
|
else
|
|
add_preferred_console("ttySC", port, baud ? options : NULL);
|
|
}
|
|
}
|
|
|
|
void __init prom_init(void)
|
|
{
|
|
int argc = fw_arg0;
|
|
char **argv = (void *)fw_arg1;
|
|
int i;
|
|
int cputype;
|
|
|
|
sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
|
|
cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE;
|
|
switch (sni_brd_type) {
|
|
case SNI_BRD_TOWER_OASIC:
|
|
switch (cputype) {
|
|
case SNI_CPU_M8030:
|
|
systype = "RM400-330";
|
|
break;
|
|
case SNI_CPU_M8031:
|
|
systype = "RM400-430";
|
|
break;
|
|
case SNI_CPU_M8037:
|
|
systype = "RM400-530";
|
|
break;
|
|
case SNI_CPU_M8034:
|
|
systype = "RM400-730";
|
|
break;
|
|
default:
|
|
systype = "RM400-xxx";
|
|
break;
|
|
}
|
|
break;
|
|
case SNI_BRD_MINITOWER:
|
|
switch (cputype) {
|
|
case SNI_CPU_M8021:
|
|
case SNI_CPU_M8043:
|
|
systype = "RM400-120";
|
|
break;
|
|
case SNI_CPU_M8040:
|
|
systype = "RM400-220";
|
|
break;
|
|
case SNI_CPU_M8053:
|
|
systype = "RM400-225";
|
|
break;
|
|
case SNI_CPU_M8050:
|
|
systype = "RM400-420";
|
|
break;
|
|
default:
|
|
systype = "RM400-xxx";
|
|
break;
|
|
}
|
|
break;
|
|
case SNI_BRD_PCI_TOWER:
|
|
systype = "RM400-Cxx";
|
|
break;
|
|
case SNI_BRD_RM200:
|
|
systype = "RM200-xxx";
|
|
break;
|
|
case SNI_BRD_PCI_MTOWER:
|
|
systype = "RM300-Cxx";
|
|
break;
|
|
case SNI_BRD_PCI_DESKTOP:
|
|
switch (read_c0_prid() & 0xff00) {
|
|
case PRID_IMP_R4600:
|
|
case PRID_IMP_R4700:
|
|
systype = "RM200-C20";
|
|
break;
|
|
case PRID_IMP_R5000:
|
|
systype = "RM200-C40";
|
|
break;
|
|
default:
|
|
systype = "RM200-Cxx";
|
|
break;
|
|
}
|
|
break;
|
|
case SNI_BRD_PCI_TOWER_CPLUS:
|
|
systype = "RM400-Exx";
|
|
break;
|
|
case SNI_BRD_PCI_MTOWER_CPLUS:
|
|
systype = "RM300-Exx";
|
|
break;
|
|
}
|
|
pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type,systype);
|
|
|
|
#ifdef DEBUG
|
|
sni_idprom_dump();
|
|
#endif
|
|
sni_mem_init();
|
|
sni_console_setup();
|
|
|
|
/* copy prom cmdline parameters to kernel cmdline */
|
|
for (i = 1; i < argc; i++) {
|
|
strcat(arcs_cmdline, argv[i]);
|
|
if (i < (argc - 1))
|
|
strcat(arcs_cmdline, " ");
|
|
}
|
|
}
|
|
|