18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* NG4patch.S: Patch Ultra-I routines with Niagara-4 variant. 38c2ecf20Sopenharmony_ci * 48c2ecf20Sopenharmony_ci * Copyright (C) 2012 David S. Miller <davem@davemloft.net> 58c2ecf20Sopenharmony_ci */ 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci#include <linux/linkage.h> 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#define BRANCH_ALWAYS 0x10680000 108c2ecf20Sopenharmony_ci#define NOP 0x01000000 118c2ecf20Sopenharmony_ci#define NG_DO_PATCH(OLD, NEW) \ 128c2ecf20Sopenharmony_ci sethi %hi(NEW), %g1; \ 138c2ecf20Sopenharmony_ci or %g1, %lo(NEW), %g1; \ 148c2ecf20Sopenharmony_ci sethi %hi(OLD), %g2; \ 158c2ecf20Sopenharmony_ci or %g2, %lo(OLD), %g2; \ 168c2ecf20Sopenharmony_ci sub %g1, %g2, %g1; \ 178c2ecf20Sopenharmony_ci sethi %hi(BRANCH_ALWAYS), %g3; \ 188c2ecf20Sopenharmony_ci sll %g1, 11, %g1; \ 198c2ecf20Sopenharmony_ci srl %g1, 11 + 2, %g1; \ 208c2ecf20Sopenharmony_ci or %g3, %lo(BRANCH_ALWAYS), %g3; \ 218c2ecf20Sopenharmony_ci or %g3, %g1, %g3; \ 228c2ecf20Sopenharmony_ci stw %g3, [%g2]; \ 238c2ecf20Sopenharmony_ci sethi %hi(NOP), %g3; \ 248c2ecf20Sopenharmony_ci or %g3, %lo(NOP), %g3; \ 258c2ecf20Sopenharmony_ci stw %g3, [%g2 + 0x4]; \ 268c2ecf20Sopenharmony_ci flush %g2; 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci .globl niagara4_patch_copyops 298c2ecf20Sopenharmony_ci .type niagara4_patch_copyops,#function 308c2ecf20Sopenharmony_ciniagara4_patch_copyops: 318c2ecf20Sopenharmony_ci NG_DO_PATCH(memcpy, NG4memcpy) 328c2ecf20Sopenharmony_ci NG_DO_PATCH(raw_copy_from_user, NG4copy_from_user) 338c2ecf20Sopenharmony_ci NG_DO_PATCH(raw_copy_to_user, NG4copy_to_user) 348c2ecf20Sopenharmony_ci retl 358c2ecf20Sopenharmony_ci nop 368c2ecf20Sopenharmony_ci .size niagara4_patch_copyops,.-niagara4_patch_copyops 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci .globl niagara4_patch_bzero 398c2ecf20Sopenharmony_ci .type niagara4_patch_bzero,#function 408c2ecf20Sopenharmony_ciniagara4_patch_bzero: 418c2ecf20Sopenharmony_ci NG_DO_PATCH(memset, NG4memset) 428c2ecf20Sopenharmony_ci NG_DO_PATCH(__bzero, NG4bzero) 438c2ecf20Sopenharmony_ci NG_DO_PATCH(__clear_user, NGclear_user) 448c2ecf20Sopenharmony_ci NG_DO_PATCH(tsb_init, NGtsb_init) 458c2ecf20Sopenharmony_ci retl 468c2ecf20Sopenharmony_ci nop 478c2ecf20Sopenharmony_ci .size niagara4_patch_bzero,.-niagara4_patch_bzero 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ci .globl niagara4_patch_pageops 508c2ecf20Sopenharmony_ci .type niagara4_patch_pageops,#function 518c2ecf20Sopenharmony_ciniagara4_patch_pageops: 528c2ecf20Sopenharmony_ci NG_DO_PATCH(copy_user_page, NG4copy_user_page) 538c2ecf20Sopenharmony_ci NG_DO_PATCH(_clear_page, NG4clear_page) 548c2ecf20Sopenharmony_ci NG_DO_PATCH(clear_user_page, NG4clear_user_page) 558c2ecf20Sopenharmony_ci retl 568c2ecf20Sopenharmony_ci nop 578c2ecf20Sopenharmony_ci .size niagara4_patch_pageops,.-niagara4_patch_pageops 588c2ecf20Sopenharmony_ci 598c2ecf20Sopenharmony_ciENTRY(niagara4_patch_fls) 608c2ecf20Sopenharmony_ci NG_DO_PATCH(fls, NG4fls) 618c2ecf20Sopenharmony_ci NG_DO_PATCH(__fls, __NG4fls) 628c2ecf20Sopenharmony_ci retl 638c2ecf20Sopenharmony_ci nop 648c2ecf20Sopenharmony_ciENDPROC(niagara4_patch_fls) 65