/*
* Find out what kind of machine we're on and save any data we need
* from the early boot process (devtree is copied on pmac by prom_init()).
* This is called very early on the boot process, after a minimal
* MMU environment has been set up but before MMU_init is called.
*/
notrace void __init machine_init(unsigned long dt_ptr)
{
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
/* Do some early initialization based on the flat device tree */
early_init_devtree(__va(dt_ptr));
probe_machine();
setup_kdump_trampoline();
#ifdef CONFIG_6xx
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = ppc6xx_idle;
#endif
#ifdef CONFIG_E500
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = e500_idle;
#endif
if (ppc_md.progress)
ppc_md.progress("id mach(): done", 0x200);
}
notrace void __init machine_init(u64 dt_ptr)
{
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
patch_instruction((unsigned int *)&memcpy, PPC_INST_NOP);
patch_instruction(&memset_nocache_branch, PPC_INST_NOP);
/* Do some early initialization based on the flat device tree */
early_init_devtree(__va(dt_ptr));
epapr_paravirt_early_init();
early_init_mmu();
probe_machine();
setup_kdump_trampoline();
#ifdef CONFIG_6xx
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = ppc6xx_idle;
#endif
#ifdef CONFIG_E500
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = e500_idle;
#endif
if (ppc_md.progress)
ppc_md.progress("id mach(): done", 0x200);
}
notrace void __init machine_init(u64 dt_ptr)
{
lockdep_init();
udbg_early_init();
early_init_devtree(__va(dt_ptr));
early_init_mmu();
probe_machine();
setup_kdump_trampoline();
#ifdef CONFIG_6xx
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = ppc6xx_idle;
#endif
#ifdef CONFIG_E500
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = e500_idle;
#endif
if (ppc_md.progress)
ppc_md.progress("id mach(): done", 0x200);
}
void __init early_setup(unsigned long dt_ptr)
{
struct paca_struct *lpaca = get_paca();
static struct machdep_calls **mach;
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
DBG(" -> early_setup()\n");
/*
* Do early initializations using the flattened device
* tree, like retreiving the physical memory map or
* calculating/retreiving the hash table size
*/
early_init_devtree(__va(dt_ptr));
/*
* Iterate all ppc_md structures until we find the proper
* one for the current machine type
*/
DBG("Probing machine type for platform %x...\n", _machine);
for (mach = machines; *mach; mach++) {
if ((*mach)->probe(_machine))
break;
}
/* What can we do if we didn't find ? */
if (*mach == NULL) {
DBG("No suitable machine found !\n");
for (;;);
}
ppc_md = **mach;
#ifdef CONFIG_CRASH_DUMP
kdump_setup();
#endif
DBG("Found, Initializing memory management...\n");
/*
* Initialize the MMU Hash table and create the linear mapping
* of memory. Has to be done before stab/slb initialization as
* this is currently where the page size encoding is obtained
*/
htab_initialize();
/*
* Initialize stab / SLB management except on iSeries
*/
if (!firmware_has_feature(FW_FEATURE_ISERIES)) {
if (cpu_has_feature(CPU_FTR_SLB))
slb_initialize();
else
stab_initialize(lpaca->stab_real);
}
DBG(" <- early_setup()\n");
}
void __init early_setup(unsigned long dt_ptr)
{
/* Identify CPU type */
identify_cpu(0, mfspr(SPRN_PVR));
/* Assume we're on cpu 0 for now. Don't write to the paca yet! */
setup_paca(0);
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);
/*
* Do early initializations using the flattened device
* tree, like retreiving the physical memory map or
* calculating/retreiving the hash table size
*/
early_init_devtree(__va(dt_ptr));
/* Now we know the logical id of our boot cpu, setup the paca. */
setup_paca(boot_cpuid);
/* Fix up paca fields required for the boot cpu */
get_paca()->cpu_start = 1;
get_paca()->stab_real = __pa((u64)&initial_stab);
get_paca()->stab_addr = (u64)&initial_stab;
/* Probe the machine type */
probe_machine();
setup_kdump_trampoline();
DBG("Found, Initializing memory management...\n");
/*
* Initialize the MMU Hash table and create the linear mapping
* of memory. Has to be done before stab/slb initialization as
* this is currently where the page size encoding is obtained
*/
htab_initialize();
/*
* Initialize stab / SLB management except on iSeries
*/
if (cpu_has_feature(CPU_FTR_SLB))
slb_initialize();
else if (!firmware_has_feature(FW_FEATURE_ISERIES))
stab_initialize(get_paca()->stab_real);
DBG(" <- early_setup()\n");
}
notrace void __init machine_init(u64 dt_ptr)
{
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
patch_instruction((unsigned int *)&memcpy, PPC_INST_NOP);
patch_instruction(&memset_nocache_branch, PPC_INST_NOP);
/* Do some early initialization based on the flat device tree */
early_init_devtree(__va(dt_ptr));
early_init_mmu();
setup_kdump_trampoline();
}
void __init early_setup(unsigned long dt_ptr)
{
/* -------- printk is _NOT_ safe to use here ! ------- */
/* Fill in any unititialised pacas */
initialise_pacas();
/* Identify CPU type */
identify_cpu(0, mfspr(SPRN_PVR));
/* Assume we're on cpu 0 for now. Don't write to the paca yet! */
setup_paca(0);
/* Initialize lockdep early or else spinlocks will blow */
lockdep_init();
/* -------- printk is now safe to use ------- */
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);
/*
* Do early initialization using the flattened device
* tree, such as retrieving the physical memory map or
* calculating/retrieving the hash table size.
*/
early_init_devtree(__va(dt_ptr));
/* Now we know the logical id of our boot cpu, setup the paca. */
setup_paca(boot_cpuid);
/* Fix up paca fields required for the boot cpu */
get_paca()->cpu_start = 1;
/* Probe the machine type */
probe_machine();
setup_kdump_trampoline();
DBG("Found, Initializing memory management...\n");
/* Initialize the hash table or TLB handling */
early_init_mmu();
DBG(" <- early_setup()\n");
}
void __init early_setup(unsigned long dt_ptr)
{
static __initdata struct paca_struct boot_paca;
/* -------- printk is _NOT_ safe to use here ! ------- */
/* Try new device tree based feature discovery ... */
if (!dt_cpu_ftrs_init(__va(dt_ptr)))
/* Otherwise use the old style CPU table */
identify_cpu(0, mfspr(SPRN_PVR));
/* Assume we're on cpu 0 for now. Don't write to the paca yet! */
initialise_paca(&boot_paca, 0);
setup_paca(&boot_paca);
fixup_boot_paca();
/* -------- printk is now safe to use ------- */
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);
/*
* Do early initialization using the flattened device
* tree, such as retrieving the physical memory map or
* calculating/retrieving the hash table size.
*/
early_init_devtree(__va(dt_ptr));
/* Now we know the logical id of our boot cpu, setup the paca. */
if (boot_cpuid != 0) {
/* Poison paca_ptrs[0] again if it's not the boot cpu */
memset(&paca_ptrs[0], 0x88, sizeof(paca_ptrs[0]));
}
setup_paca(paca_ptrs[boot_cpuid]);
fixup_boot_paca();
/*
* Configure exception handlers. This include setting up trampolines
* if needed, setting exception endian mode, etc...
*/
configure_exceptions();
/* Apply all the dynamic patching */
apply_feature_fixups();
setup_feature_keys();
/* Initialize the hash table or TLB handling */
early_init_mmu();
/*
* After firmware and early platform setup code has set things up,
* we note the SPR values for configurable control/performance
* registers, and use those as initial defaults.
*/
record_spr_defaults();
/*
* At this point, we can let interrupts switch to virtual mode
* (the MMU has been setup), so adjust the MSR in the PACA to
* have IR and DR set and enable AIL if it exists
*/
cpu_ready_for_interrupts();
/*
* We enable ftrace here, but since we only support DYNAMIC_FTRACE, it
* will only actually get enabled on the boot cpu much later once
* ftrace itself has been initialized.
*/
this_cpu_enable_ftrace();
DBG(" <- early_setup()\n");
#ifdef CONFIG_PPC_EARLY_DEBUG_BOOTX
/*
* This needs to be done *last* (after the above DBG() even)
*
* Right after we return from this function, we turn on the MMU
* which means the real-mode access trick that btext does will
* no longer work, it needs to switch to using a real MMU
* mapping. This call will ensure that it does
*/
btext_map();
#endif /* CONFIG_PPC_EARLY_DEBUG_BOOTX */
}
