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/*
    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

/**
 * @file    ARMCMx/compilers/GCC/crt1.c
 * @brief   Startup stub functions.
 *
 * @addtogroup ARMCMx_GCC_STARTUP
 * @{
 */

#include <stdbool.h>

/**
 * @brief   Architecture-dependent core initialization.
 * @details This hook is invoked immediately after the stack initialization
 *          and before the DATA and BSS segments initialization.
 * @note    This function is a weak symbol.
 */
#if !defined(__DOXYGEN__)
__attribute__((weak))
#endif
/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void __core_init(void) {}

/**
 * @brief   Early initialization.
 * @details This hook is invoked immediately after the stack initialization
 *          and before the DATA and BSS segments initialization. The
 *          default behavior is to do nothing.
 * @note    This function is a weak symbol.
 */
#if !defined(__DOXYGEN__)
__attribute__((weak))
#endif
/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void __early_init(void) {}
/*lint -restore*/

/**
 * @brief   Late initialization.
 * @details This hook is invoked after the DATA and BSS segments
 *          initialization and before any static constructor. The
 *          default behavior is to do nothing.
 * @note    This function is a weak symbol.
 */
#if !defined(__DOXYGEN__)
__attribute__((weak))
#endif
/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void __late_init(void) {}
/*lint -restore*/

/**
 * @brief   Default @p main() function exit handler.
 * @details This handler is invoked or the @p main() function exit. The
 *          default behavior is to enter an infinite loop.
 * @note    This function is a weak symbol.
 */
#if !defined(__DOXYGEN__)
__attribute__((noreturn, weak))
#endif
/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
void __default_exit(void) {
/*lint -restore*/

  while (true) {
  }
}

/** @} */
n class="n">ulong sz = (3 + ra->ra_nargs + ra->ra_nrets) * sizeof (int); int ret; if (ra->ra_nargs != 1 || ra->ra_nrets != 1) { ra->ra_args[ra->ra_nargs] = RTAS_PARAMETER; return -1; } memcpy(&r, ra, sz); r.ra_token = token; ret = rtas_call(&r); ra->ra_args[ra->ra_nargs] = r.ra_args[r.ra_nargs]; return ret; } struct rtas_token rt_manage_flash = { .name = "ibm,manage-flash-image", .proxy = rtas_manage_flash, .token = -1 }; static int rtas_validate_flash(int token, struct rtas_args *ra) { ulong length = ra->ra_args[1]; char *buffer; char *local; struct rtas_args r; ulong sz = (3 + ra->ra_nargs + ra->ra_nrets) * sizeof (int); int ret; if (ra->ra_nargs != 2 || ra->ra_nrets != 2) { ra->ra_args[ra->ra_nargs] = RTAS_PARAMETER; return -1; } /* the original pointer can be in memory that is too high so we * need to do it locally */ buffer = rtas_remote_addr(ra->ra_args[0], length); if (buffer == NULL) { ra->ra_args[ra->ra_nargs] = RTAS_PARAMETER; return -1; } local = xmalloc_bytes(length); if (local == NULL) { printk("%s: could not allocate local buffer size: 0x%lx\n", __func__, length); ra->ra_args[ra->ra_nargs] = RTAS_HW; return -1; } /* RTAS is 32bits so we need to make sure that that local * buffer is in that range */ BUG_ON(((ulong)local + length) & ~0xffffffffUL); /* copy the remote buffer to the local one */ memcpy(local, buffer, length); memcpy(&r, ra, sz); r.ra_token = token; r.ra_args[0] = (unsigned)(ulong)local; ret = rtas_call(&r); ra->ra_args[ra->ra_nargs] = r.ra_args[r.ra_nargs]; ra->ra_args[ra->ra_nargs + 1] = r.ra_args[r.ra_nargs + 1]; xfree(local); return ret; } struct rtas_token rt_validate_flash = { .name = "ibm,validate-flash-image", .proxy = rtas_validate_flash, .token = -1 }; /* flash data structs */ struct flash_block { u64 addr; u64 length; }; struct flash_block_list { struct { u64 ver:8; u64 bytes:56; } header; u64 *next; struct flash_block blocks[0]; }; static int safe_to_flash; static int rtas_update_reboot_flash(int token, struct rtas_args *ra) { struct rtas_args r; ulong sz = (3 + ra->ra_nargs + ra->ra_nrets) * sizeof (int); int ret; void *local; struct flash_block_list *l; ulong blocks; if (ra->ra_nargs != 1 || ra->ra_nrets != 1) { ra->ra_args[ra->ra_nargs] = RTAS_PARAMETER; return -1; } if (!safe_to_flash) { printk("%s: this has not been fully tested yet\n", __func__); ra->ra_args[ra->ra_nargs] = RTAS_HW; return -1; } /* we only need to relocate the first block address to 4G, for now * lets just bug on that */ local = rtas_remote_addr(ra->ra_args[0], 16); BUG_ON((ulong)local & ~0xffffffffUL); /* now we run through the block list and translate base addresses */ l = (struct flash_block_list *)local; /* header and next count as one block */ blocks = (l->header.bytes / sizeof (struct flash_block)) - 1; if (blocks == 0) { ra->ra_args[ra->ra_nargs] = RTAS_PARAMETER; return -1; } /* go thru the block lists */ do { int i = 0; /* go thru the block in the list */ for (i = 0; i < blocks; i++) { void *addr; addr = rtas_remote_addr(l->blocks[i].addr, l->blocks[i].length); BUG_ON(addr == NULL); l->blocks[i].addr = (u64)addr; } l = (struct flash_block_list *)l->next; } while (l != NULL); memcpy(&r, ra, sz); r.ra_token = token; /* this arguement is a pointer to a block list */ r.ra_args[0] = (unsigned)(ulong)local; ret = rtas_call(&r); ra->ra_args[ra->ra_nargs] = r.ra_args[r.ra_nargs]; return ret; } struct rtas_token rt_update_reboot_flash = { .name = "ibm,update-flash-64-and-reboot", .proxy = rtas_update_reboot_flash, .token = -1 };