diff options
| author | Ovidiu Panait | 2022-05-31 21:14:34 +0300 |
|---|---|---|
| committer | Michal Simek | 2022-06-24 14:16:00 +0200 |
| commit | 9df16c5937f68654fb2b67f932319c375f8e4e45 (patch) | |
| tree | ebc707f01f5adb332eda3759a6ded58d81675161 /arch/microblaze/cpu | |
| parent | 064057fdbee085dba17f7afc298deb9ffbf3382a (diff) | |
microblaze: add support for handling PVR data
Add helper code for PVR (Processor Version Register) data handling. It
will be used by the UCLASS_CPU driver to populate cpuinfo fields at
runtime.
Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Link: https://lore.kernel.org/r/20220531181435.3473549-13-ovpanait@gmail.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Diffstat (limited to 'arch/microblaze/cpu')
| -rw-r--r-- | arch/microblaze/cpu/Makefile | 1 | ||||
| -rw-r--r-- | arch/microblaze/cpu/pvr.c | 41 |
2 files changed, 42 insertions, 0 deletions
diff --git a/arch/microblaze/cpu/Makefile b/arch/microblaze/cpu/Makefile index 78d7f83597a..ea65a0976ee 100644 --- a/arch/microblaze/cpu/Makefile +++ b/arch/microblaze/cpu/Makefile @@ -7,4 +7,5 @@ extra-y = start.o obj-y = irq.o obj-y += interrupts.o cache.o exception.o timer.o cpuinfo.o obj-$(CONFIG_STATIC_RELA) += relocate.o +obj-$(CONFIG_XILINX_MICROBLAZE0_PVR) += pvr.o obj-$(CONFIG_SPL_BUILD) += spl.o diff --git a/arch/microblaze/cpu/pvr.c b/arch/microblaze/cpu/pvr.c new file mode 100644 index 00000000000..23c0f912d43 --- /dev/null +++ b/arch/microblaze/cpu/pvr.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2022, Ovidiu Panait <ovpanait@gmail.com> + */ +#include <common.h> +#include <asm/asm.h> +#include <asm/pvr.h> + +int microblaze_cpu_has_pvr_full(void) +{ + u32 msr, pvr0; + + MFS(msr, rmsr); + if (!(msr & PVR_MSR_BIT)) + return 0; + + get_pvr(0, pvr0); + debug("%s: pvr0 is 0x%08x\n", __func__, pvr0); + + if (!(pvr0 & PVR0_PVR_FULL_MASK)) + return 0; + + return 1; +} + +void microblaze_get_all_pvrs(u32 pvr[PVR_FULL_COUNT]) +{ + get_pvr(0, pvr[0]); + get_pvr(1, pvr[1]); + get_pvr(2, pvr[2]); + get_pvr(3, pvr[3]); + get_pvr(4, pvr[4]); + get_pvr(5, pvr[5]); + get_pvr(6, pvr[6]); + get_pvr(7, pvr[7]); + get_pvr(8, pvr[8]); + get_pvr(9, pvr[9]); + get_pvr(10, pvr[10]); + get_pvr(11, pvr[11]); + get_pvr(12, pvr[12]); +} |