| | 1 | #\r |
| | 2 | # Copyright (c) 2014-2018, Linaro Limited. All rights reserved.\r |
| | 3 | #\r |
| | 4 | # This program and the accompanying materials are licensed and made available\r |
| | 5 | # under the terms and conditions of the BSD License which accompanies this\r |
| | 6 | # distribution. The full text of the license may be found at\r |
| | 7 | # http://opensource.org/licenses/bsd-license.php\r |
| | 8 | #\r |
| | 9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| | 10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| | 11 | #\r |
| | 12 | #\r |
| | 13 | \r |
| | 14 | GCC_ASM_EXPORT(MmioRead8Internal)\r |
| | 15 | GCC_ASM_EXPORT(MmioWrite8Internal)\r |
| | 16 | GCC_ASM_EXPORT(MmioRead16Internal)\r |
| | 17 | GCC_ASM_EXPORT(MmioWrite16Internal)\r |
| | 18 | GCC_ASM_EXPORT(MmioRead32Internal)\r |
| | 19 | GCC_ASM_EXPORT(MmioWrite32Internal)\r |
| | 20 | GCC_ASM_EXPORT(MmioRead64Internal)\r |
| | 21 | GCC_ASM_EXPORT(MmioWrite64Internal)\r |
| | 22 | \r |
| | 23 | //\r |
| | 24 | // Reads an 8-bit MMIO register.\r |
| | 25 | //\r |
| | 26 | // Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r |
| | 27 | // returned. This function must guarantee that all MMIO read and write\r |
| | 28 | // operations are serialized.\r |
| | 29 | //\r |
| | 30 | // @param Address The MMIO register to read.\r |
| | 31 | //\r |
| | 32 | // @return The value read.\r |
| | 33 | //\r |
| | 34 | ASM_PFX(MmioRead8Internal):\r |
| | 35 | ldrb r0, [r0]\r |
| | 36 | dmb\r |
| | 37 | bx lr\r |
| | 38 | \r |
| | 39 | //\r |
| | 40 | // Writes an 8-bit MMIO register.\r |
| | 41 | //\r |
| | 42 | // Writes the 8-bit MMIO register specified by Address with the value specified\r |
| | 43 | // by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 44 | // and write operations are serialized.\r |
| | 45 | //\r |
| | 46 | // @param Address The MMIO register to write.\r |
| | 47 | // @param Value The value to write to the MMIO register.\r |
| | 48 | //\r |
| | 49 | ASM_PFX(MmioWrite8Internal):\r |
| | 50 | dmb st\r |
| | 51 | strb r1, [r0]\r |
| | 52 | bx lr\r |
| | 53 | \r |
| | 54 | //\r |
| | 55 | // Reads a 16-bit MMIO register.\r |
| | 56 | //\r |
| | 57 | // Reads the 16-bit MMIO register specified by Address. The 16-bit read value is\r |
| | 58 | // returned. This function must guarantee that all MMIO read and write\r |
| | 59 | // operations are serialized.\r |
| | 60 | //\r |
| | 61 | // @param Address The MMIO register to read.\r |
| | 62 | //\r |
| | 63 | // @return The value read.\r |
| | 64 | //\r |
| | 65 | ASM_PFX(MmioRead16Internal):\r |
| | 66 | ldrh r0, [r0]\r |
| | 67 | dmb\r |
| | 68 | bx lr\r |
| | 69 | \r |
| | 70 | //\r |
| | 71 | // Writes a 16-bit MMIO register.\r |
| | 72 | //\r |
| | 73 | // Writes the 16-bit MMIO register specified by Address with the value specified\r |
| | 74 | // by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 75 | // and write operations are serialized.\r |
| | 76 | //\r |
| | 77 | // @param Address The MMIO register to write.\r |
| | 78 | // @param Value The value to write to the MMIO register.\r |
| | 79 | //\r |
| | 80 | ASM_PFX(MmioWrite16Internal):\r |
| | 81 | dmb st\r |
| | 82 | strh r1, [r0]\r |
| | 83 | bx lr\r |
| | 84 | \r |
| | 85 | //\r |
| | 86 | // Reads a 32-bit MMIO register.\r |
| | 87 | //\r |
| | 88 | // Reads the 32-bit MMIO register specified by Address. The 32-bit read value is\r |
| | 89 | // returned. This function must guarantee that all MMIO read and write\r |
| | 90 | // operations are serialized.\r |
| | 91 | //\r |
| | 92 | // @param Address The MMIO register to read.\r |
| | 93 | //\r |
| | 94 | // @return The value read.\r |
| | 95 | //\r |
| | 96 | ASM_PFX(MmioRead32Internal):\r |
| | 97 | ldr r0, [r0]\r |
| | 98 | dmb\r |
| | 99 | bx lr\r |
| | 100 | \r |
| | 101 | //\r |
| | 102 | // Writes a 32-bit MMIO register.\r |
| | 103 | //\r |
| | 104 | // Writes the 32-bit MMIO register specified by Address with the value specified\r |
| | 105 | // by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 106 | // and write operations are serialized.\r |
| | 107 | //\r |
| | 108 | // @param Address The MMIO register to write.\r |
| | 109 | // @param Value The value to write to the MMIO register.\r |
| | 110 | //\r |
| | 111 | ASM_PFX(MmioWrite32Internal):\r |
| | 112 | dmb st\r |
| | 113 | str r1, [r0]\r |
| | 114 | bx lr\r |
| | 115 | \r |
| | 116 | //\r |
| | 117 | // Reads a 64-bit MMIO register.\r |
| | 118 | //\r |
| | 119 | // Reads the 64-bit MMIO register specified by Address. The 64-bit read value is\r |
| | 120 | // returned. This function must guarantee that all MMIO read and write\r |
| | 121 | // operations are serialized.\r |
| | 122 | //\r |
| | 123 | // @param Address The MMIO register to read.\r |
| | 124 | //\r |
| | 125 | // @return The value read.\r |
| | 126 | //\r |
| | 127 | ASM_PFX(MmioRead64Internal):\r |
| | 128 | ldr r1, [r0, #4]\r |
| | 129 | ldr r0, [r0]\r |
| | 130 | dmb\r |
| | 131 | bx lr\r |
| | 132 | \r |
| | 133 | //\r |
| | 134 | // Writes a 64-bit MMIO register.\r |
| | 135 | //\r |
| | 136 | // Writes the 64-bit MMIO register specified by Address with the value specified\r |
| | 137 | // by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 138 | // and write operations are serialized.\r |
| | 139 | //\r |
| | 140 | // @param Address The MMIO register to write.\r |
| | 141 | // @param Value The value to write to the MMIO register.\r |
| | 142 | //\r |
| | 143 | ASM_PFX(MmioWrite64Internal):\r |
| | 144 | dmb st\r |
| | 145 | str r2, [r0]\r |
| | 146 | str r3, [r0, #4]\r |
| | 147 | bx lr\r |
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