/* --------------------------------------------------------------------------
Name: prom_init
-------------------------------------------------------------------------- */
void __init prom_init(void)
{
extern ulong r4k_interval;
serial_init();
kerSysFlashInit();
do_syslog(8, NULL, 8);
printk( "%s prom init\n", get_system_type() );
PERF->IrqMask = 0;
arcs_cmdline[0] = '\0';
#if defined(CONFIG_ROOT_NFS)
create_root_nfs_cmdline( arcs_cmdline );
#elif defined(CONFIG_ROOT_FLASHFS)
strcpy(arcs_cmdline, CONFIG_ROOT_FLASHFS);
#endif
add_memory_region(0, (getMemorySize() - ADSL_SDRAM_IMAGE_SIZE), BOOT_MEM_RAM);
#if defined(CONFIG_BCM96348)
calculateCpuSpeed();
#endif
/* Count register increments every other clock */
r4k_interval = CPU_CLOCK / HZ / 2;
mips_hpt_frequency = CPU_CLOCK / 2;
mips_machgroup = MACH_GROUP_BRCM;
mips_machtype = MACH_BCM;
}
void __init plat_time_init(void)
{
/* JU: TBD: there was some special SMP handling added here in original kernel */
mips_hpt_frequency = calculateCpuSpeed() / 2;
#if defined(CONFIG_BCM_PWRMNGT) || defined(CONFIG_BCM_PWRMNGT_MODULE)
BcmPwrMngtInitC0Speed();
#else
// Enable cp0 counter/compare interrupt only when not using power management
write_c0_status(IE_IRQ5 | read_c0_status());
#endif
}
int getCPUspeed_cmd(int argc, char **argv) {
int speed;
if (_cpuIdTest() != 1) {
printf("error: cpuid instruction is not supported.\n");
return false;
}
printf("Detected cpuid instruction...\n");
if (_rdtscTest() > 0) {
printf("Using rdtsc to perform measurement...\n");
speed = calculateCpuSpeed(_tscGetCpuSpeed);
} else if (_rdmsrTest() > 0) {
printf("Using rdmsr to perform measurement...\n");
speed = calculateCpuSpeed(_msrGetCpuSpeed);
} else {
printf("error: rdtsc or rdmsr should be available to perform this command\n");
return false;
}
printf("Detected CPU speed: %dMHz\n", speed);
return 0;
}
void __init prom_init(void)
{
#if 0
int argc = fw_arg0;
u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1);
int i;
kerSysEarlyFlashInit();
// too early in bootup sequence to acquire spinlock, not needed anyways
// only the kernel is running at this point
kerSysNvRamGetBoardIdLocked(promBoardIdStr);
printk( "%s prom init\n", promBoardIdStr );
#if defined(CONFIG_BCM_KF_DSP) && defined(CONFIG_BCM_BCMDSP_MODULE)
main_tp_num = ((read_c0_diag3() & CP0_CMT_TPID) == CP0_CMT_TPID) ? 1 : 0;
printk("Linux TP ID = %u \n", (unsigned int)main_tp_num);
#endif
PERF->IrqControl[0].IrqMask=0;
arcs_cmdline[0] = '\0';
create_cmdline(arcs_cmdline);
strcat(arcs_cmdline, " ");
for (i = 1; i < argc; i++) {
strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i]));
if (i < (argc - 1))
strcat(arcs_cmdline, " ");
}
/* Count register increments every other clock */
mips_hpt_frequency = calculateCpuSpeed() / 2;
retrieve_boot_loader_parameters();
#endif
}
