linux-sg2042/arch/mips/alchemy/devboards/db1235.c

95 lines
2.0 KiB
C

/*
* DB1200/PB1200 / DB1550 / DB1300 board support.
*
* These 4 boards can reliably be supported in a single kernel image.
*/
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-db1x00/bcsr.h>
int __init db1200_board_setup(void);
int __init db1200_dev_setup(void);
int __init db1300_board_setup(void);
int __init db1300_dev_setup(void);
int __init db1550_board_setup(void);
int __init db1550_dev_setup(void);
int __init db1550_pci_setup(int);
static const char *board_type_str(void)
{
switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
case BCSR_WHOAMI_PB1200_DDR1:
case BCSR_WHOAMI_PB1200_DDR2:
return "PB1200";
case BCSR_WHOAMI_DB1200:
return "DB1200";
case BCSR_WHOAMI_DB1300:
return "DB1300";
case BCSR_WHOAMI_DB1550:
return "DB1550";
case BCSR_WHOAMI_PB1550_SDR:
case BCSR_WHOAMI_PB1550_DDR:
return "PB1550";
default:
return "(unknown)";
}
}
const char *get_system_type(void)
{
return board_type_str();
}
void __init board_setup(void)
{
int ret;
switch (alchemy_get_cputype()) {
case ALCHEMY_CPU_AU1550:
ret = db1550_board_setup();
break;
case ALCHEMY_CPU_AU1200:
ret = db1200_board_setup();
break;
case ALCHEMY_CPU_AU1300:
ret = db1300_board_setup();
break;
default:
pr_err("unsupported CPU on board\n");
ret = -ENODEV;
}
if (ret)
panic("cannot initialize board support");
}
int __init db1235_arch_init(void)
{
int id = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
if (id == BCSR_WHOAMI_DB1550)
return db1550_pci_setup(0);
else if ((id == BCSR_WHOAMI_PB1550_SDR) ||
(id == BCSR_WHOAMI_PB1550_DDR))
return db1550_pci_setup(1);
return 0;
}
arch_initcall(db1235_arch_init);
int __init db1235_dev_init(void)
{
switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
case BCSR_WHOAMI_PB1200_DDR1:
case BCSR_WHOAMI_PB1200_DDR2:
case BCSR_WHOAMI_DB1200:
return db1200_dev_setup();
case BCSR_WHOAMI_DB1300:
return db1300_dev_setup();
case BCSR_WHOAMI_DB1550:
case BCSR_WHOAMI_PB1550_SDR:
case BCSR_WHOAMI_PB1550_DDR:
return db1550_dev_setup();
}
return 0;
}
device_initcall(db1235_dev_init);