amd/stoneyridge: Change ACPI _PR.CPxx to _PR.Pxxx
This is a bug introduced by this commit: stoneyridge: Fix CPU ASL \_PR table [commit I870f81] The following error is found in dmesg ACPI Error: [\_PR_.P000] Namespace lookup failure, AE_NOT_FOUND... ACPI Exception: AE_NOT_FOUND, During name lookup/catalog... ACPI Exception: AE_NOT_FOUND, (SSDT:AGESA ) while loading table... ACPI Error: 1 table load failures, 3 successful... ... acpi-cpufreq: overriding BIOS provided _PSD data And, "ls -la /sys/devices/system/cpu/cpufreq/" doesn't work The cause is that the Pstate SSDT table generated by AGESA expects CPU variables \_PR.Pxxx, not \_PR.CPxx as generated by coreboot. Use Kconfig to set the required string. BRANCH=none BUG=b:64885241 TEST= Check dmeg and ls -la /sys/devices/system/cpu/cpufreq/ Change-Id: I4929f9a1c39705c6df9d965c8d030f4d1f0b5e5f Signed-off-by: Marc Jones <marcj303@gmail.com> Reviewed-on: https://review.coreboot.org/21165 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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@ -292,4 +292,8 @@ config SMM_TSEG_SIZE
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default 0x800000 if HAVE_SMI_HANDLER
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default 0x0
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config ACPI_CPU_STRING
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string
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default "\\_PR.P%03d"
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endif # SOC_AMD_STONEYRIDGE_FP4 || SOC_AMD_STONEYRIDGE_FT4
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@ -244,12 +244,11 @@ void generate_cpu_entries(device_t device)
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printk(BIOS_DEBUG, "ACPI \\_PR report %d core(s)\n", cores);
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/* Generate BSP \_PR.CPU0 */
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/* Generate BSP \_PR.P000 */
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acpigen_write_processor(0, pcontrol_blk, plen);
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acpigen_pop_len();
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/* Generate AP \_PR.CPUx */
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/* Generate AP \_PR.Pxxx */
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pcontrol_blk = 0;
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plen = 0;
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for (cpu = 1; cpu < cores; cpu++) {
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