projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 3654fa95 CLG |
1 | /* |
| 2 | * QEMU PowerPC helper routines for the device tree. | |
| 3 | * | |
| 4 | * Copyright (C) 2016 IBM Corp. | |
| 5 | * | |
| 6 | * This code is licensed under the GPL version 2 or later. See the | |
| 7 | * COPYING file in the top-level directory. | |
| 8 | */ | |
| 9 | ||
| 10 | #include "qemu/osdep.h" | |
| fcf5ef2a | 11 | #include "target/ppc/cpu.h" |
| 3654fa95 CLG |
12 | |
| 13 | #include "hw/ppc/fdt.h" | |
| 14 | ||
| 15 | #if defined(TARGET_PPC64) | |
| 16 | size_t ppc_create_page_sizes_prop(CPUPPCState *env, uint32_t *prop, | |
| 17 | size_t maxsize) | |
| 18 | { | |
| 19 | size_t maxcells = maxsize / sizeof(uint32_t); | |
| 20 | int i, j, count; | |
| 21 | uint32_t *p = prop; | |
| 22 | ||
| 23 | for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) { | |
| 24 | struct ppc_one_seg_page_size *sps = &env->sps.sps[i]; | |
| 25 | ||
| 26 | if (!sps->page_shift) { | |
| 27 | break; | |
| 28 | } | |
| 29 | for (count = 0; count < PPC_PAGE_SIZES_MAX_SZ; count++) { | |
| 30 | if (sps->enc[count].page_shift == 0) { | |
| 31 | break; | |
| 32 | } | |
| 33 | } | |
| 34 | if ((p - prop) >= (maxcells - 3 - count * 2)) { | |
| 35 | break; | |
| 36 | } | |
| 37 | *(p++) = cpu_to_be32(sps->page_shift); | |
| 38 | *(p++) = cpu_to_be32(sps->slb_enc); | |
| 39 | *(p++) = cpu_to_be32(count); | |
| 40 | for (j = 0; j < count; j++) { | |
| 41 | *(p++) = cpu_to_be32(sps->enc[j].page_shift); | |
| 42 | *(p++) = cpu_to_be32(sps->enc[j].pte_enc); | |
| 43 | } | |
| 44 | } | |
| 45 | ||
| 46 | return (p - prop) * sizeof(uint32_t); | |
| 47 | } | |
| 48 | #endif |