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target-arm: Drop JTAG_ID documentation

None of the machines in QEMU offer a JTAG debug interface, so this info
was unused. Further, the PXA250 ID contradicts the February 2002
Developer's Manual, which has it as 0xn9264013 with n the MIDR Revision.

Signed-off-by: Andreas Färber <>
Signed-off-by: Peter Maydell <>
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commit 4e851c380eda2bf27ff2ded85e4c80a342e6a72f 1 parent 0ca7e01
@pm215 pm215 authored
Showing with 0 additions and 2 deletions.
  1. +0 −2  target-arm/helper.c
2  target-arm/helper.c
@@ -114,7 +114,6 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id)
case ARM_CPUID_PXA260:
case ARM_CPUID_PXA261:
case ARM_CPUID_PXA262:
- /* JTAG_ID is ((id << 28) | 0x09265013) */
case ARM_CPUID_PXA270_A0:
case ARM_CPUID_PXA270_A1:
@@ -122,7 +121,6 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id)
case ARM_CPUID_PXA270_B1:
case ARM_CPUID_PXA270_C0:
case ARM_CPUID_PXA270_C5:
- /* JTAG_ID is ((id << 28) | 0x09265013) */
env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q';
case ARM_CPUID_SA1100:
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