From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org
Subject: [PATCH 22/24] powerpc: Add mfspr/mtspr inline macros to 4xx bootwrapper
Date: Fri, 30 Nov 2007 17:11:05 +1100 [thread overview]
Message-ID: <20071130061207.A21AADDF04@ozlabs.org> (raw)
In-Reply-To: <1196403038.569525.367459803520.qpush@grosgo>
The 4xx bootwrapper occasionally needs to access SPR registers,
this adds mfspr/mtspr wrappers to it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
===================================================================
--- linux-work.orig/arch/powerpc/boot/reg.h 2007-11-27 14:37:00.000000000 +1100
+++ linux-work/arch/powerpc/boot/reg.h 2007-11-27 14:37:58.000000000 +1100
@@ -16,6 +16,14 @@ static inline u32 mfpvr(void)
return pvr;
}
+#define __stringify_1(x) #x
+#define __stringify(x) __stringify_1(x)
+
+#define mfspr(rn) ({unsigned long rval; \
+ asm volatile("mfspr %0," __stringify(rn) \
+ : "=r" (rval)); rval;})
+#define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
+
register void *__stack_pointer asm("r1");
#define get_sp() (__stack_pointer)
next prev parent reply other threads:[~2007-11-30 6:11 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-30 6:10 [PATCH 0/24] powerpc: 4xx PCI, PCI-X and PCI-Express support among others Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 1/24] powerpc: Make isa_mem_base common to 32 and 64 bits Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 2/24] powerpc: Merge pci_process_bridge_OF_ranges() Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 3/24] powerpc: Fix powerpc 32 bits resource fixup for 64 bits resources Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 4/24] powerpc: Fix 440/440A machine check handling Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 5/24] powerpc: Fix 440SPE machine check Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 6/24] powerpc: Add xmon function to dump 44x TLB Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 7/24] powerpc: Change 32 bits PCI message about resource allocation Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 8/24] powerpc: Add of_translate_dma_address Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 9/24] powerpc: Improve support for 4xx indirect DCRs Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 10/24] powerpc: 4xx PLB to PCI-X support Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 11/24] powerpc: 4xx PLB to PCI 2.x support Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 12/24] powerpc: 4xx PLB to PCI Express support Benjamin Herrenschmidt
2007-11-30 9:18 ` Kumar Gala
2007-11-30 9:26 ` Benjamin Herrenschmidt
2007-12-02 12:32 ` Stefan Roese
2007-12-02 14:17 ` Josh Boyer
2007-12-02 20:33 ` Benjamin Herrenschmidt
2007-12-02 22:01 ` Stefan Roese
2007-11-30 6:10 ` [PATCH 13/24] powerpc: PCI support for 4xx Ebony board Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 14/24] powerpc: Add early udbg support for 40x processors Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 15/24] powerpc: early debug forces console log level to max Benjamin Herrenschmidt
2007-11-30 19:10 ` T Ziomek
2007-11-30 20:56 ` Benjamin Herrenschmidt
2007-11-30 22:11 ` T Ziomek
2007-11-30 22:14 ` Scott Wood
2007-11-30 22:15 ` Benjamin Herrenschmidt
2007-11-30 22:30 ` T Ziomek
2007-11-30 6:10 ` [PATCH 16/24] powerpc: EP405 boards support for arch/powerpc Benjamin Herrenschmidt
2007-11-30 6:10 ` [PATCH 17/24] powerpc: Add PCI to Walnut platform Benjamin Herrenschmidt
2007-11-30 6:11 ` [PATCH 19/24] powerpc: Wire up PCI on Bamboo board Benjamin Herrenschmidt
2007-11-30 6:11 ` [PATCH 18/24] powerpc: Base support for 440GX Taishan eval board Benjamin Herrenschmidt
2007-11-30 20:08 ` Josh Boyer
2007-11-30 20:57 ` Benjamin Herrenschmidt
2007-11-30 21:32 ` Josh Boyer
2007-11-30 21:44 ` Benjamin Herrenschmidt
2007-11-30 6:11 ` [PATCH 20/24] powerpc: Wire up 440EP USB controlle support to Bamboo board Benjamin Herrenschmidt
2007-11-30 6:11 ` [PATCH 21/24] powerpc: Adds decoding of 440SPE memory size to boot wrapper library Benjamin Herrenschmidt
2007-11-30 6:11 ` [PATCH 23/24] powerpc: Rework 4xx clock probing in boot wrapper Benjamin Herrenschmidt
2007-11-30 6:11 ` Benjamin Herrenschmidt [this message]
2007-11-30 6:11 ` [PATCH 24/24] powerpc: Base support for 440SPe "Katmai" eval board Benjamin Herrenschmidt
2007-11-30 7:59 ` Benjamin Herrenschmidt
2007-11-30 14:59 ` Olof Johansson
2007-11-30 20:16 ` Josh Boyer
2007-12-02 12:23 ` Stefan Roese
2007-12-02 12:35 ` Stefan Roese
2007-11-30 14:15 ` [PATCH 0/24] powerpc: 4xx PCI, PCI-X and PCI-Express support among others Olof Johansson
2007-11-30 15:12 ` Kumar Gala
2007-11-30 15:27 ` Olof Johansson
2007-11-30 16:11 ` Jon Loeliger
2007-12-01 0:53 ` Josh Boyer
2007-12-01 1:18 ` Doug Maxey
2007-12-03 4:18 ` Grant Likely
2007-11-30 20:54 ` Benjamin Herrenschmidt
2007-11-30 21:22 ` Olof Johansson
2007-11-30 20:17 ` Josh Boyer
2007-12-03 3:24 ` Benjamin Herrenschmidt
2007-12-03 4:20 ` Josh Boyer
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