Commit 8e2ad016 authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: Add PVR for endians plus detection 



Upcomming microblaze version will support little-endian.

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 44180a57

arch/microblaze/include/asm/cpuinfo.h

+1 −0
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ struct cpuinfo { 
	u32 use_exc;

	u32 ver_code;

	u32 mmu;

	u32 endian;



	/* CPU caches */

	u32 use_icache;

arch/microblaze/include/asm/pvr.h

+3 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ struct pvr_s { 
#define PVR0_USE_DCACHE_MASK		0x01000000

#define PVR0_USE_MMU			0x00800000

#define PVR0_USE_BTC			0x00400000

#define PVR0_ENDI			0x00200000

#define PVR0_VERSION_MASK		0x0000FF00

#define PVR0_USER1_MASK			0x000000FF
@@ -209,6 +210,8 @@ struct pvr_s { 
#define PVR_MMU_TLB_ACCESS(pvr)	(pvr.pvr[11] & PVR11_MMU_TLB_ACCESS)

#define PVR_MMU_ZONES(pvr)	(pvr.pvr[11] & PVR11_MMU_ZONES)



/* endian */

#define PVR_ENDIAN(pvr)	(pvr.pvr[0] & PVR0_ENDI)



int cpu_has_pvr(void);

void get_pvr(struct pvr_s *pvr);

arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c

+1 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu) 
	CI(pvr_user2, USER2);



	CI(mmu, USE_MMU);

	CI(endian, ENDIAN);



	CI(use_icache, USE_ICACHE);

	CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);

arch/microblaze/kernel/cpu/cpuinfo-static.c

+1 −0
Original line number Diff line number Diff line
@@ -119,6 +119,7 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu) 
	ci->pvr_user2 = fcpu(cpu, "xlnx,pvr-user2");



	ci->mmu = fcpu(cpu, "xlnx,use-mmu");

	ci->endian = fcpu(cpu, "xlnx,endianness");



	ci->ver_code = 0;

	ci->fpga_family_code = 0;

arch/microblaze/kernel/cpu/mb.c

+2 −1
Original line number Diff line number Diff line
@@ -51,11 +51,12 @@ static int show_cpuinfo(struct seq_file *m, void *v) 
	count = seq_printf(m,

			"CPU-Family:	MicroBlaze\n"

			"FPGA-Arch:	%s\n"

			"CPU-Ver:	%s\n"

			"CPU-Ver:	%s, %s endian\n"

			"CPU-MHz:	%d.%02d\n"

			"BogoMips:	%lu.%02lu\n",

			fpga_family,

			cpu_ver,

			cpuinfo.endian ? "little" : "big",

			cpuinfo.cpu_clock_freq /

			1000000,

			cpuinfo.cpu_clock_freq %

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