| Anson Huang | 4c28fc3 | 2018-06-05 16:12:27 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <asm_macros.S> |
| 8 | #include <platform_def.h> |
| 9 | #include <cortex_a35.h> |
| 10 | |
| 11 | .globl plat_is_my_cpu_primary |
| 12 | .globl plat_my_core_pos |
| 13 | .globl plat_calc_core_pos |
| 14 | .globl plat_reset_handler |
| 15 | .globl plat_get_my_entrypoint |
| 16 | .globl plat_secondary_cold_boot_setup |
| 17 | .globl plat_crash_console_init |
| 18 | .globl plat_crash_console_putc |
| Antonio Nino Diaz | 1eb64a1 | 2018-10-17 15:29:34 +0100 | [diff] [blame^] | 19 | .globl plat_crash_console_flush |
| Anson Huang | 4c28fc3 | 2018-06-05 16:12:27 +0800 | [diff] [blame] | 20 | .globl platform_mem_init |
| 21 | .globl imx_mailbox_init |
| 22 | |
| 23 | /* -------------------------------------------------------------------- |
| 24 | * Helper macro that reads the part number of the current CPU and jumps |
| 25 | * to the given label if it matches the CPU MIDR provided. |
| 26 | * |
| 27 | * Clobbers x0. |
| 28 | * -------------------------------------------------------------------- |
| 29 | */ |
| 30 | .macro jump_if_cpu_midr _cpu_midr, _label |
| 31 | |
| 32 | mrs x0, midr_el1 |
| 33 | ubfx x0, x0, MIDR_PN_SHIFT, #12 |
| 34 | cmp w0, #((\_cpu_midr >> MIDR_PN_SHIFT) & MIDR_PN_MASK) |
| 35 | b.eq \_label |
| 36 | |
| 37 | .endm |
| 38 | |
| 39 | /* ---------------------------------------------- |
| 40 | * The mailbox_base is used to distinguish warm/cold |
| 41 | * reset. The mailbox_base is in the data section, not |
| 42 | * in .bss, this allows function to start using this |
| 43 | * variable before the runtime memory is initialized. |
| 44 | * ---------------------------------------------- |
| 45 | */ |
| 46 | .section .data.mailbox_base |
| 47 | .align 3 |
| 48 | mailbox_base: .quad 0x0 |
| 49 | |
| 50 | /* ---------------------------------------------- |
| 51 | * unsigned int plat_is_my_cpu_primary(void); |
| 52 | * This function checks if this is the primary CPU |
| 53 | * ---------------------------------------------- |
| 54 | */ |
| 55 | func plat_is_my_cpu_primary |
| 56 | mrs x0, mpidr_el1 |
| 57 | and x0, x0, #(MPIDR_CPU_MASK) |
| 58 | cmp x0, #PLAT_PRIMARY_CPU |
| 59 | cset x0, eq |
| 60 | ret |
| 61 | endfunc plat_is_my_cpu_primary |
| 62 | |
| 63 | /* ---------------------------------------------- |
| 64 | * unsigned int plat_my_core_pos(void) |
| 65 | * This Function uses the plat_calc_core_pos() |
| 66 | * to get the index of the calling CPU. |
| 67 | * ---------------------------------------------- |
| 68 | */ |
| 69 | func plat_my_core_pos |
| 70 | mrs x0, mpidr_el1 |
| 71 | and x1, x0, #MPIDR_CPU_MASK |
| 72 | and x0, x0, #MPIDR_CLUSTER_MASK |
| 73 | add x0, x1, x0, LSR #6 |
| 74 | ret |
| 75 | endfunc plat_my_core_pos |
| 76 | |
| 77 | /* |
| 78 | * unsigned int plat_calc_core_pos(uint64_t mpidr) |
| 79 | * helper function to calculate the core position. |
| 80 | * With this function. |
| 81 | */ |
| 82 | func plat_calc_core_pos |
| 83 | and x1, x0, #MPIDR_CPU_MASK |
| 84 | and x0, x0, #MPIDR_CLUSTER_MASK |
| 85 | add x0, x1, x0, LSR #6 |
| 86 | ret |
| 87 | endfunc plat_calc_core_pos |
| 88 | |
| 89 | /* --------------------------------------------- |
| 90 | * function to get the entrypoint. |
| 91 | * --------------------------------------------- |
| 92 | */ |
| 93 | func plat_get_my_entrypoint |
| 94 | adrp x1, mailbox_base |
| 95 | ldr x0, [x1, :lo12:mailbox_base] |
| 96 | ret |
| 97 | endfunc plat_get_my_entrypoint |
| 98 | |
| 99 | func imx_mailbox_init |
| 100 | adrp x1, mailbox_base |
| 101 | str x0, [x1, :lo12:mailbox_base] |
| 102 | ret |
| 103 | endfunc imx_mailbox_init |
| 104 | |
| 105 | func plat_secondary_cold_boot_setup |
| 106 | b . |
| 107 | endfunc plat_secondary_cold_boot_setup |
| 108 | |
| 109 | func plat_crash_console_init |
| Antonio Nino Diaz | 1eb64a1 | 2018-10-17 15:29:34 +0100 | [diff] [blame^] | 110 | mov x0, #1 |
| Anson Huang | 4c28fc3 | 2018-06-05 16:12:27 +0800 | [diff] [blame] | 111 | ret |
| 112 | endfunc plat_crash_console_init |
| 113 | |
| 114 | func plat_crash_console_putc |
| 115 | ret |
| 116 | endfunc plat_crash_console_putc |
| 117 | |
| Antonio Nino Diaz | 1eb64a1 | 2018-10-17 15:29:34 +0100 | [diff] [blame^] | 118 | func plat_crash_console_flush |
| 119 | mov x0, #0 |
| 120 | ret |
| 121 | endfunc plat_crash_console_flush |
| 122 | |
| Anson Huang | 4c28fc3 | 2018-06-05 16:12:27 +0800 | [diff] [blame] | 123 | func platform_mem_init |
| 124 | ret |
| 125 | endfunc platform_mem_init |