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powerpc/64: Move the content of setup_system() to setup_arch() 

And kill setup_system().

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2016-07-05 15:04:09 +10:00 committed by Michael Ellerman
parent 9df549afea
commit fa745a129c
2 changed files with 63 additions and 76 deletions
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5
arch/powerpc/kernel/head_64.S
View File

@ -941,7 +941,7 @@ start_here_multiplatform:
mtspr SPRN_SRR1,r4
RFI
b . /* prevent speculative execution */
/* This is where all platforms converge execution */
start_here_common:
@ -951,9 +951,6 @@ start_here_common:
/* Load the TOC (virtual address) */
ld r2,PACATOC(r13)
/* Do more system initializations in virtual mode */
bl setup_system
/* Mark interrupts soft and hard disabled (they might be enabled
* in the PACA when doing hotplug)
*/

134
arch/powerpc/kernel/setup_64.c
View File

@ -512,78 +512,6 @@ static __init void print_system_info(void)
pr_info("-----------------------------------------------------\n");
}
/*
* Do some initial setup of the system. The parameters are those which
* were passed in from the bootloader.
*/
void __init setup_system(void)
{
DBG(" -> setup_system()\n");
/*
* Unflatten the device-tree passed by prom_init or kexec
*/
unflatten_device_tree();
/*
* Fill the ppc64_caches & systemcfg structures with informations
* retrieved from the device-tree.
*/
initialize_cache_info();
#ifdef CONFIG_PPC_RTAS
/*
* Initialize RTAS if available
*/
rtas_initialize();
#endif /* CONFIG_PPC_RTAS */
/*
* Check if we have an initrd provided via the device-tree
*/
check_for_initrd();
/* Probe the machine type */
probe_machine();
/*
* We can discover serial ports now since the above did setup the
* hash table management for us, thus ioremap works. We do that early
* so that further code can be debugged
*/
find_legacy_serial_ports();
/*
* Register early console
*/
register_early_udbg_console();
/*
* Initialize xmon
*/
xmon_setup();
smp_setup_cpu_maps();
check_smt_enabled();
setup_tlb_core_data();
/*
* Freescale Book3e parts spin in a loop provided by firmware,
* so smp_release_cpus() does nothing for them
*/
#if defined(CONFIG_SMP)
/* Release secondary cpus out of their spinloops at 0x60 now that
* we can map physical -> logical CPU ids
*/
smp_release_cpus();
#endif
/* Print various info about the machine that has been gathered so far. */
print_system_info();
DBG(" <- setup_system()\n");
}
/* This returns the limit below which memory accesses to the linear
* mapping are guarnateed not to cause a TLB or SLB miss. This is
* used to allocate interrupt or emergency stacks for which our
@ -695,6 +623,68 @@ void __init setup_arch(char **cmdline_p)
{
*cmdline_p = boot_command_line;
/*
* Unflatten the device-tree passed by prom_init or kexec
*/
unflatten_device_tree();
/*
* Fill the ppc64_caches & systemcfg structures with informations
* retrieved from the device-tree.
*/
initialize_cache_info();
#ifdef CONFIG_PPC_RTAS
/*
* Initialize RTAS if available
*/
rtas_initialize();
#endif /* CONFIG_PPC_RTAS */
/*
* Check if we have an initrd provided via the device-tree
*/
check_for_initrd();
/* Probe the machine type */
probe_machine();
/*
* We can discover serial ports now since the above did setup the
* hash table management for us, thus ioremap works. We do that early
* so that further code can be debugged
*/
find_legacy_serial_ports();
/*
* Register early console
*/
register_early_udbg_console();
/*
* Initialize xmon
*/
xmon_setup();
smp_setup_cpu_maps();
check_smt_enabled();
setup_tlb_core_data();
/*
* Freescale Book3e parts spin in a loop provided by firmware,
* so smp_release_cpus() does nothing for them
*/
#if defined(CONFIG_SMP)
/*
* Release secondary cpus out of their spinloops at 0x60 now that
* we can map physical -> logical CPU ids
*/
smp_release_cpus();
#endif
/* Print various info about the machine that has been gathered so far. */
print_system_info();
/* Reserve large chunks of memory for use by CMA for KVM */
kvm_cma_reserve();