diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 07:48:23 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 07:48:23 -0800 |
commit | ee1262dbc65ce0b6234a915d8432171e8d77f518 (patch) | |
tree | 3a4003800d170de691b2e6a9c93c0ca6795678bf /arch/sparc/kernel/trampoline_32.S | |
parent | a421018e8c10e5593a1fee076af72a66c3fe8ca3 (diff) | |
parent | 7f5620a5fcd658f219e85831d3691908f1eccbde (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6:
sparc: Set UTS_MACHINE correctly.
sparc,leon: init_leon srmmu cleanup
sparc32: Remove early interrupt enable.
sparc, leon: Added Aeroflex Gaisler entry in manufacturer_info structure
sparc64: Faster early-boot framebuffer console.
Revert "sparc: Make atomic locks raw"
sparc: remove unused nfsd #includes
sparc: Fixup last users of irq_chip->typename
Added sparc_leon3_snooping_enabled() and converted extern inline to static inline
No auxio on LEON
apbuart: Use of_find_node_by_path to find root node.
sparc: Replace old style lock initializer
sparc: Make atomic locks raw
apbuart: Fix build and missing driver unregister.
apbuart: Kill dependency on deprecated Sparc-only PROM interfaces.
apbuart: Fix build warning.
sparc: Support for GRLIB APBUART serial port
watchdog: Remove BKL from rio watchdog driver
sparc: Remove BKL from apc
sparc,leon: Sparc-Leon SMP support
Diffstat (limited to 'arch/sparc/kernel/trampoline_32.S')
-rw-r--r-- | arch/sparc/kernel/trampoline_32.S | 69 |
1 files changed, 68 insertions, 1 deletions
diff --git a/arch/sparc/kernel/trampoline_32.S b/arch/sparc/kernel/trampoline_32.S index 5e235c52d66..691f484e03b 100644 --- a/arch/sparc/kernel/trampoline_32.S +++ b/arch/sparc/kernel/trampoline_32.S @@ -15,7 +15,7 @@ #include <asm/contregs.h> #include <asm/thread_info.h> - .globl sun4m_cpu_startup, __smp4m_processor_id + .globl sun4m_cpu_startup, __smp4m_processor_id, __leon_processor_id .globl sun4d_cpu_startup, __smp4d_processor_id __CPUINIT @@ -106,6 +106,12 @@ __smp4d_processor_id: retl mov %g1, %o7 +__leon_processor_id: + rd %asr17,%g2 + srl %g2,28,%g2 + retl + mov %g1, %o7 + /* CPUID in bootbus can be found at PA 0xff0140000 */ #define SUN4D_BOOTBUS_CPUID 0xf0140000 @@ -160,3 +166,64 @@ sun4d_cpu_startup: nop b,a smp_do_cpu_idle + +#ifdef CONFIG_SPARC_LEON + + __CPUINIT + .align 4 + .global leon_smp_cpu_startup, smp_penguin_ctable + +leon_smp_cpu_startup: + + set smp_penguin_ctable,%g1 + ld [%g1+4],%g1 + srl %g1,4,%g1 + set 0x00000100,%g5 /* SRMMU_CTXTBL_PTR */ + sta %g1, [%g5] ASI_M_MMUREGS + + /* Set up a sane %psr -- PIL<0xf> S<0x1> PS<0x1> CWP<0x0> */ + set (PSR_PIL | PSR_S | PSR_PS), %g1 + wr %g1, 0x0, %psr ! traps off though + WRITE_PAUSE + + /* Our %wim is one behind CWP */ + mov 2, %g1 + wr %g1, 0x0, %wim + WRITE_PAUSE + + /* Set tbr - we use just one trap table. */ + set trapbase, %g1 + wr %g1, 0x0, %tbr + WRITE_PAUSE + + /* Get our CPU id */ + rd %asr17,%g3 + + /* Give ourselves a stack and curptr. */ + set current_set, %g5 + srl %g3, 28, %g4 + sll %g4, 2, %g4 + ld [%g5 + %g4], %g6 + + sethi %hi(THREAD_SIZE - STACKFRAME_SZ), %sp + or %sp, %lo(THREAD_SIZE - STACKFRAME_SZ), %sp + add %g6, %sp, %sp + + /* Turn on traps (PSR_ET). */ + rd %psr, %g1 + wr %g1, PSR_ET, %psr ! traps on + WRITE_PAUSE + + /* Init our caches, etc. */ + set poke_srmmu, %g5 + ld [%g5], %g5 + call %g5 + nop + + /* Start this processor. */ + call leon_callin + nop + + b,a smp_do_cpu_idle + +#endif |