Commit 28cf2c9c authored by Zhao Ke's avatar Zhao Ke Committed by Ren Zhijie
Browse files

powerpc: Add PVN support for HeXin C2000 processor 

mainline inclusion
from mainline-v6.8-rc1
commit e12d8e2602d2bcd26022eff3e2519d25925e760c
category: other
bugzilla: https://gitee.com/openeuler/kernel/issues/I8ZMAY

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v6.8-rc1&id=e12d8e2602d2bcd26022eff3e2519d25925e760c



--------------------------------

HeXin Tech Co. has applied for a new PVN from the OpenPower Community
for its new processor C2000. The OpenPower has assigned a new PVN
and this newly assigned PVN is 0x0066, add pvr register related
support for this PVN.

Signed-off-by: default avatarZhao Ke <ke.zhao@shingroup.cn>
Link: https://discuss.openpower.foundation/t/how-to-get-a-new-pvr-for-processors-follow-power-isa/477/10


Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231129075845.57976-1-ke.zhao@shingroup.cn


Signed-off-by: default avatarRen Zhijie <zhijie.ren@shingroup.cn>
parent 245c31af

arch/powerpc/include/asm/reg.h

+1 −0
Original line number Diff line number Diff line
@@ -1361,6 +1361,7 @@ 
#define PVR_POWER8E	0x004B

#define PVR_POWER8NVL	0x004C

#define PVR_POWER8	0x004D

#define PVR_HX_C2000	0x0066

#define PVR_POWER9	0x004E

#define PVR_POWER10	0x0080

#define PVR_BE		0x0070

arch/powerpc/kernel/cpu_specs_book3s_64.h

+15 −0
Original line number Diff line number Diff line
@@ -238,6 +238,21 @@ static struct cpu_spec cpu_specs[] __initdata = { 
		.machine_check_early	= __machine_check_early_realmode_p8,

		.platform		= "power8",

	},

	{	/* 2.07-compliant processor, HeXin C2000 processor */

		.pvr_mask		= 0xffff0000,

		.pvr_value		= 0x00660000,

		.cpu_name		= "HX-C2000",

		.cpu_features		= CPU_FTRS_POWER8,

		.cpu_user_features	= COMMON_USER_POWER8,

		.cpu_user_features2	= COMMON_USER2_POWER8,

		.mmu_features		= MMU_FTRS_POWER8,

		.icache_bsize		= 128,

		.dcache_bsize		= 128,

		.cpu_setup		= __setup_cpu_power8,

		.cpu_restore		= __restore_cpu_power8,

		.machine_check_early	= __machine_check_early_realmode_p8,

		.platform		= "power8",

	},

	{	/* 3.00-compliant processor, i.e. Power9 "architected" mode */

		.pvr_mask		= 0xffffffff,

		.pvr_value		= 0x0f000005,

arch/powerpc/kvm/book3s_pr.c

+1 −0
Original line number Diff line number Diff line
@@ -604,6 +604,7 @@ static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr) 
	case PVR_POWER8:

	case PVR_POWER8E:

	case PVR_POWER8NVL:

	case PVR_HX_C2000:

	case PVR_POWER9:

		vcpu->arch.hflags |= BOOK3S_HFLAG_MULTI_PGSIZE |

			BOOK3S_HFLAG_NEW_TLBIE;

arch/powerpc/mm/book3s64/pkeys.c

+2 −1
Original line number Diff line number Diff line
@@ -89,7 +89,8 @@ static int __init scan_pkey_feature(void) 
			unsigned long pvr = mfspr(SPRN_PVR);



			if (PVR_VER(pvr) == PVR_POWER8 || PVR_VER(pvr) == PVR_POWER8E ||

			    PVR_VER(pvr) == PVR_POWER8NVL || PVR_VER(pvr) == PVR_POWER9)

			    PVR_VER(pvr) == PVR_POWER8NVL || PVR_VER(pvr) == PVR_POWER9 ||

			    PVR_VER(pvr) == PVR_HX_C2000)

				pkeys_total = 32;

		}

	}

arch/powerpc/platforms/powernv/subcore.c

+2 −1
Original line number Diff line number Diff line
@@ -425,7 +425,8 @@ static int subcore_init(void) 


	if (pvr_ver != PVR_POWER8 &&

	    pvr_ver != PVR_POWER8E &&

	    pvr_ver != PVR_POWER8NVL)

	    pvr_ver != PVR_POWER8NVL &&

	    pvr_ver != PVR_HX_C2000)

		return 0;



	/*