| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_POWERPC_MMU_44X_H_ |
| #define _ASM_POWERPC_MMU_44X_H_ |
| /* |
| * PPC440 support |
| */ |
| |
| #include <asm/page.h> |
| |
| #define PPC44x_MMUCR_TID 0x000000ff |
| #define PPC44x_MMUCR_STS 0x00010000 |
| |
| #define PPC44x_TLB_PAGEID 0 |
| #define PPC44x_TLB_XLAT 1 |
| #define PPC44x_TLB_ATTRIB 2 |
| |
| /* Page identification fields */ |
| #define PPC44x_TLB_EPN_MASK 0xfffffc00 /* Effective Page Number */ |
| #define PPC44x_TLB_VALID 0x00000200 /* Valid flag */ |
| #define PPC44x_TLB_TS 0x00000100 /* Translation address space */ |
| #define PPC44x_TLB_1K 0x00000000 /* Page sizes */ |
| #define PPC44x_TLB_4K 0x00000010 |
| #define PPC44x_TLB_16K 0x00000020 |
| #define PPC44x_TLB_64K 0x00000030 |
| #define PPC44x_TLB_256K 0x00000040 |
| #define PPC44x_TLB_1M 0x00000050 |
| #define PPC44x_TLB_16M 0x00000070 |
| #define PPC44x_TLB_256M 0x00000090 |
| |
| /* Translation fields */ |
| #define PPC44x_TLB_RPN_MASK 0xfffffc00 /* Real Page Number */ |
| #define PPC44x_TLB_ERPN_MASK 0x0000000f |
| |
| /* Storage attribute and access control fields */ |
| #define PPC44x_TLB_ATTR_MASK 0x0000ff80 |
| #define PPC44x_TLB_U0 0x00008000 /* User 0 */ |
| #define PPC44x_TLB_U1 0x00004000 /* User 1 */ |
| #define PPC44x_TLB_U2 0x00002000 /* User 2 */ |
| #define PPC44x_TLB_U3 0x00001000 /* User 3 */ |
| #define PPC44x_TLB_W 0x00000800 /* Caching is write-through */ |
| #define PPC44x_TLB_I 0x00000400 /* Caching is inhibited */ |
| #define PPC44x_TLB_M 0x00000200 /* Memory is coherent */ |
| #define PPC44x_TLB_G 0x00000100 /* Memory is guarded */ |
| #define PPC44x_TLB_E 0x00000080 /* Memory is little endian */ |
| |
| #define PPC44x_TLB_PERM_MASK 0x0000003f |
| #define PPC44x_TLB_UX 0x00000020 /* User execution */ |
| #define PPC44x_TLB_UW 0x00000010 /* User write */ |
| #define PPC44x_TLB_UR 0x00000008 /* User read */ |
| #define PPC44x_TLB_SX 0x00000004 /* Super execution */ |
| #define PPC44x_TLB_SW 0x00000002 /* Super write */ |
| #define PPC44x_TLB_SR 0x00000001 /* Super read */ |
| |
| /* Number of TLB entries */ |
| #define PPC44x_TLB_SIZE 64 |
| |
| /* 47x bits */ |
| #define PPC47x_MMUCR_TID 0x0000ffff |
| #define PPC47x_MMUCR_STS 0x00010000 |
| |
| /* Page identification fields */ |
| #define PPC47x_TLB0_EPN_MASK 0xfffff000 /* Effective Page Number */ |
| #define PPC47x_TLB0_VALID 0x00000800 /* Valid flag */ |
| #define PPC47x_TLB0_TS 0x00000400 /* Translation address space */ |
| #define PPC47x_TLB0_4K 0x00000000 |
| #define PPC47x_TLB0_16K 0x00000010 |
| #define PPC47x_TLB0_64K 0x00000030 |
| #define PPC47x_TLB0_1M 0x00000070 |
| #define PPC47x_TLB0_16M 0x000000f0 |
| #define PPC47x_TLB0_256M 0x000001f0 |
| #define PPC47x_TLB0_1G 0x000003f0 |
| #define PPC47x_TLB0_BOLTED_R 0x00000008 /* tlbre only */ |
| |
| /* Translation fields */ |
| #define PPC47x_TLB1_RPN_MASK 0xfffff000 /* Real Page Number */ |
| #define PPC47x_TLB1_ERPN_MASK 0x000003ff |
| |
| /* Storage attribute and access control fields */ |
| #define PPC47x_TLB2_ATTR_MASK 0x0003ff80 |
| #define PPC47x_TLB2_IL1I 0x00020000 /* Memory is guarded */ |
| #define PPC47x_TLB2_IL1D 0x00010000 /* Memory is guarded */ |
| #define PPC47x_TLB2_U0 0x00008000 /* User 0 */ |
| #define PPC47x_TLB2_U1 0x00004000 /* User 1 */ |
| #define PPC47x_TLB2_U2 0x00002000 /* User 2 */ |
| #define PPC47x_TLB2_U3 0x00001000 /* User 3 */ |
| #define PPC47x_TLB2_W 0x00000800 /* Caching is write-through */ |
| #define PPC47x_TLB2_I 0x00000400 /* Caching is inhibited */ |
| #define PPC47x_TLB2_M 0x00000200 /* Memory is coherent */ |
| #define PPC47x_TLB2_G 0x00000100 /* Memory is guarded */ |
| #define PPC47x_TLB2_E 0x00000080 /* Memory is little endian */ |
| #define PPC47x_TLB2_PERM_MASK 0x0000003f |
| #define PPC47x_TLB2_UX 0x00000020 /* User execution */ |
| #define PPC47x_TLB2_UW 0x00000010 /* User write */ |
| #define PPC47x_TLB2_UR 0x00000008 /* User read */ |
| #define PPC47x_TLB2_SX 0x00000004 /* Super execution */ |
| #define PPC47x_TLB2_SW 0x00000002 /* Super write */ |
| #define PPC47x_TLB2_SR 0x00000001 /* Super read */ |
| #define PPC47x_TLB2_U_RWX (PPC47x_TLB2_UX|PPC47x_TLB2_UW|PPC47x_TLB2_UR) |
| #define PPC47x_TLB2_S_RWX (PPC47x_TLB2_SX|PPC47x_TLB2_SW|PPC47x_TLB2_SR) |
| #define PPC47x_TLB2_S_RW (PPC47x_TLB2_SW | PPC47x_TLB2_SR) |
| #define PPC47x_TLB2_IMG (PPC47x_TLB2_I | PPC47x_TLB2_M | PPC47x_TLB2_G) |
| |
| #ifndef __ASSEMBLY__ |
| |
| extern unsigned int tlb_44x_hwater; |
| extern unsigned int tlb_44x_index; |
| |
| typedef struct { |
| unsigned int id; |
| unsigned int active; |
| unsigned long vdso_base; |
| } mm_context_t; |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| #ifndef CONFIG_PPC_EARLY_DEBUG_44x |
| #define PPC44x_EARLY_TLBS 1 |
| #else |
| #define PPC44x_EARLY_TLBS 2 |
| #define PPC44x_EARLY_DEBUG_VIRTADDR (ASM_CONST(0xf0000000) \ |
| | (ASM_CONST(CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW) & 0xffff)) |
| #endif |
| |
| /* Size of the TLBs used for pinning in lowmem */ |
| #define PPC_PIN_SIZE (1 << 28) /* 256M */ |
| |
| #if (PAGE_SHIFT == 12) |
| #define PPC44x_TLBE_SIZE PPC44x_TLB_4K |
| #define PPC47x_TLBE_SIZE PPC47x_TLB0_4K |
| #define mmu_virtual_psize MMU_PAGE_4K |
| #elif (PAGE_SHIFT == 14) |
| #define PPC44x_TLBE_SIZE PPC44x_TLB_16K |
| #define PPC47x_TLBE_SIZE PPC47x_TLB0_16K |
| #define mmu_virtual_psize MMU_PAGE_16K |
| #elif (PAGE_SHIFT == 16) |
| #define PPC44x_TLBE_SIZE PPC44x_TLB_64K |
| #define PPC47x_TLBE_SIZE PPC47x_TLB0_64K |
| #define mmu_virtual_psize MMU_PAGE_64K |
| #elif (PAGE_SHIFT == 18) |
| #define PPC44x_TLBE_SIZE PPC44x_TLB_256K |
| #define mmu_virtual_psize MMU_PAGE_256K |
| #else |
| #error "Unsupported PAGE_SIZE" |
| #endif |
| |
| #define mmu_linear_psize MMU_PAGE_256M |
| |
| #define PPC44x_PGD_OFF_SHIFT (32 - PGDIR_SHIFT + PGD_T_LOG2) |
| #define PPC44x_PGD_OFF_MASK_BIT (PGDIR_SHIFT - PGD_T_LOG2) |
| #define PPC44x_PTE_ADD_SHIFT (32 - PGDIR_SHIFT + PTE_SHIFT + PTE_T_LOG2) |
| #define PPC44x_PTE_ADD_MASK_BIT (32 - PTE_T_LOG2 - PTE_SHIFT) |
| |
| #endif /* _ASM_POWERPC_MMU_44X_H_ */ |
