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/*
* Copyright 2017, Rockchip Electronics Co., Ltd
* hisping lin, <hisping.lin@rock-chips.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <stdlib.h>
#include <optee_include/OpteeClientMem.h>
#include <optee_include/OpteeClientRPC.h>
#include <optee_include/teesmc.h>
#include <optee_include/teesmc_optee.h>
#include <optee_include/teesmc_v2.h>
void *my_mem_start;
uint32_t my_count;
uint8_t *my_flag = NULL;
typedef struct {
void *addrBlock;
uint32_t sizeBlock;
uint8_t used;
} ALLOC_FLAG;
ALLOC_FLAG alloc_flags[50];
int my_malloc_init(void *start, uint32_t size)
{
if (start == NULL || size == 0) {
printf("malloc init fail!");
return -1;
}
memset(start, 0, size);
my_mem_start = start;
my_count = size/4096;
if (my_flag == NULL) {
my_flag = malloc(size/4096);
if (my_flag == NULL) {
printf("malloc fail!");
return -1;
}
}
memset(my_flag, 0, size/4096);
memset(alloc_flags, 0, 50 * sizeof(ALLOC_FLAG));
return 0;
}
void write_usedblock(void *addr, uint32_t size)
{
uint8_t k;
for (k = 0; k < 50; k++) {
if (alloc_flags[k].used == 0) {
alloc_flags[k].used = 1;
alloc_flags[k].addrBlock = addr;
alloc_flags[k].sizeBlock = size;
break;
}
}
}
uint32_t find_sizeblock(void *addr)
{
uint8_t k;
for (k = 0; k < 50; k++)
if (alloc_flags[k].used == 1 &&
alloc_flags[k].addrBlock == addr)
return alloc_flags[k].sizeBlock;
return 0;
}
void free_usedblock(void *addr)
{
uint8_t k;
for (k = 0; k < 50; k++) {
if (alloc_flags[k].used == 1 &&
alloc_flags[k].addrBlock == addr) {
alloc_flags[k].used = 0;
alloc_flags[k].addrBlock = 0;
alloc_flags[k].sizeBlock = 0;
break;
}
}
}
void *my_malloc(uint32_t size)
{
uint32_t i, j, k, num;
num = (size - 1) / 4096 + 1;
if (my_count < num)
return 0;
for (i = 0; i < my_count - num; i++) {
if (*(my_flag + i) == 0) {
for (j = 0; j < num; j++) {
if (*(my_flag + i + j) != 0)
break;
}
if (j == num) {
for (k = 0; k < num; k++) {
*(my_flag + i + k) = 1;
memset(my_mem_start +
(i + k) * 4096, 0, 4096);
}
debug(" malloc is: 0x%X 0x%X\n",
(int)i, (int)num);
write_usedblock((my_mem_start + i * 4096),
num * 4096);
return my_mem_start + (i * 4096);
}
}
}
return 0;
}
void my_free(void *ptr)
{
uint32_t i, j, num, size;
if (ptr < my_mem_start)
return;
i = (ptr - my_mem_start) / 4096;
size = find_sizeblock(ptr);
free_usedblock(ptr);
if (size == 0)
return;
num = (size-1)/4096+1;
debug(" free is: 0x%X 0x%X\n", i, num);
for (j = 0; j < num; j++) {
*(my_flag + i + j) = 0;
memset(my_mem_start + (i + j) * 4096, 0, 4096);
}
}
/*
* Initlialize the memory component, for example providing the
* containing drivers handle.
*/
int OpteeClientMemInit(void)
{
ARM_SMC_ARGS ArmSmcArgs = {0};
#ifdef CONFIG_OPTEE_V1
ArmSmcArgs.Arg0 = TEESMC32_OPTEE_FASTCALL_GET_SHM_CONFIG;
#endif
#ifdef CONFIG_OPTEE_V2
ArmSmcArgs.Arg0 = OPTEE_SMC_GET_SHM_CONFIG_V2;
#endif
tee_smc_call(&ArmSmcArgs);
debug("get share memory, arg0=0x%x arg1=0x%x arg2=0x%x arg3=0x%x\n",
ArmSmcArgs.Arg0, ArmSmcArgs.Arg1, ArmSmcArgs.Arg2, ArmSmcArgs.Arg3);
return my_malloc_init((void *)(size_t)ArmSmcArgs.Arg1, ArmSmcArgs.Arg2);
}
/*
* Allocate a page aligned block of memory from the TrustZone
* shared memory block.
*/
void *OpteeClientMemAlloc(uint32_t length)
{
return my_malloc(length);
}
/*
* Free a block of memory previously allocated using the
* OpteeClientMemAlloc function.
*/
void OpteeClientMemFree(void *mem)
{
my_free(mem);
}
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