[Qemu-devel] [PATCH] ARM920T CPU ID

[Qemu-devel] [PATCH] ARM920T CPU ID

[Daniel Silverstone]

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Hi,

Attached is a patch which supplies the ARM920T CPU ID for ARM emulation.
This is another step along the way to supporting Simtec Electronics'
development boards, and other Samsung ARM9 SoC based systems such as the
Openmoko GTA02.

Regards,

Daniel.

-- 
Daniel Silverstone                              http://www.simtec.co.uk/
PGP mail accepted and encouraged.            Key Id: 2BC8 4016 2068 7895


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ARM CPU ID: ARM920T

Simply put, this patch adds the ARM920T CPU ID as an option. This will
later be needed by the Samsung S3C24xx ARM9 SOCs.

Signed-off-by: Daniel Silverstone <dsilvers@simtec.co.uk>

 cpu.h    |    1 +
 helper.c |    3 +++
 2 files changed, 4 insertions(+)

=== modified file 'target-arm/cpu.h'
--- target-arm/cpu.h	2008-07-01 20:01:19 +0000
+++ target-arm/cpu.h	2008-10-13 10:16:21 +0000
@@ -356,6 +356,7 @@
 #define ARM_CPUID_ARM1026     0x4106a262
 #define ARM_CPUID_ARM926      0x41069265
 #define ARM_CPUID_ARM946      0x41059461
+#define ARM_CPUID_ARM920T     0x41129200
 #define ARM_CPUID_TI915T      0x54029152
 #define ARM_CPUID_TI925T      0x54029252
 #define ARM_CPUID_PXA250      0x69052100

=== modified file 'target-arm/helper.c'
--- target-arm/helper.c	2008-10-11 17:55:29 +0000
+++ target-arm/helper.c	2008-10-13 10:16:21 +0000
@@ -37,6 +37,8 @@
 {
     env->cp15.c0_cpuid = id;
     switch (id) {
+    case ARM_CPUID_ARM920T:
+       break;
     case ARM_CPUID_ARM926:
         set_feature(env, ARM_FEATURE_VFP);
         env->vfp.xregs[ARM_VFP_FPSID] = 0x41011090;
@@ -268,6 +270,7 @@
     { ARM_CPUID_ARM926, "arm926"},
     { ARM_CPUID_ARM946, "arm946"},
     { ARM_CPUID_ARM1026, "arm1026"},
+    { ARM_CPUID_ARM920T, "arm920t"},
     { ARM_CPUID_ARM1136, "arm1136"},
     { ARM_CPUID_ARM1136_R2, "arm1136-r2"},
     { ARM_CPUID_ARM11MPCORE, "arm11mpcore"},

Re: [Qemu-devel] [PATCH] ARM920T CPU ID

[Paul Brook]

On Monday 13 October 2008, Daniel Silverstone wrote:
> Hi,
>
> Attached is a patch which supplies the ARM920T CPU ID for ARM emulation.
> This is another step along the way to supporting Simtec Electronics'
> development boards, and other Samsung ARM9 SoC based systems such as the
> Openmoko GTA02.

This at least needs a comment saying that what we implement doesn't look 
anything like a real ARM920, but most software doesn't care.

Paul

Re: [Qemu-devel] [PATCH] ARM920T CPU ID

[Daniel Silverstone]

On Mon, 2008-10-13 at 13:52 +0100, Paul Brook wrote:
> > Attached is a patch which supplies the ARM920T CPU ID for ARM emulation.
> > This is another step along the way to supporting Simtec Electronics'
> > development boards, and other Samsung ARM9 SoC based systems such as the
> > Openmoko GTA02.
> This at least needs a comment saying that what we implement doesn't look 
> anything like a real ARM920, but most software doesn't care.

Where would such a comment best reside? I'm not sure where the
documentation for this kind of thing is meant to go.

(I agree that it's worthwhile to note this information though)

Regards,

D.

-- 
Daniel Silverstone                              http://www.simtec.co.uk/
PGP mail accepted and encouraged.            Key Id: 2BC8 4016 2068 7895