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defendkey: script signing tool: support upgrade check [5/5]

Browse Source 
PD#SWPL-3204

Problem:
GXL/TXLX/G12A/G12B: script signing tool need to support defendkey

Solution:
1.change dtb decrypt process

Verify:
GXL/TXLX/G12A/G12B skt board verify pass

Change-Id: I165db827dec82837edb8a4a5197090bbd79d536d
Signed-off-by: Zhongfu Luo <zhongfu.luo@amlogic.com>
This commit is contained in:
Zhongfu Luo
2018-12-27 17:47:20 +08:00
committed by Dongjin Kim
parent 2709452f24
commit 61ae581366
2 changed files with 40 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
drivers/amlogic/defendkey/defendkey.c
View File

@@ -134,8 +134,8 @@ static long defendkey_compat_ioctl(struct file *filp,
static ssize_t defendkey_read(struct file *file,
char __user *buf, size_t count, loff_t *ppos)
{
int i, ret;
unsigned long copy_base, copy_size;
int ret;
unsigned long copy_base, copy_size, mem_base_phy, check_offset;
switch (decrypt_dtb) {
case e_upgrade_check:
@@ -143,29 +143,44 @@ static ssize_t defendkey_read(struct file *file,
return ret_error;
case e_decrypt_dtb_success:
{
for (i = 0; i <= count/mem_size; i++) {
copy_size = mem_size;
copy_base = (unsigned long)buf+i*mem_size;
if ((i+1)*mem_size > count)
copy_size = count - mem_size*i;
ret = copy_to_user((void __user *)copy_base,
(const void *)mem_base_virt, copy_size);
if (ret) {
pr_err("%s:copy_to_user fail! ret:%d\n",
__func__, ret);
return ret_fail;
}
//__dma_flush_area((const void *)mem_base_virt, copy_size);
mem_base_phy = virt_to_phys(mem_base_virt);
check_offset = aml_sec_boot_check(AML_D_Q_IMG_SIG_HDR_SIZE,
mem_base_phy, mem_size, 0);
if (AML_D_Q_IMG_SIG_HDR_SIZE == (check_offset & 0xFFFF))
check_offset = (check_offset >> 16) & 0xFFFF;
else
check_offset = 0;
if (check_offset)
memmove((void *)mem_base_virt,
(void *)mem_base_virt + check_offset, mem_size);
if (mem_size < count) {
pr_err("%s:data size overflow!\n", __func__);
return ret_fail;
}
if (!ret) {
copy_base = (unsigned long)buf;
copy_size = count;
ret = copy_to_user((void __user *)copy_base,
(const void *)mem_base_virt, copy_size);
if (ret) {
pr_err("%s:copy_to_user fail! ret:%d\n",
__func__, ret);
ret = ret_fail;
} else {
pr_info("%s: copy data to user successfully!\n",
__func__);
return ret_success;
ret = ret_success;
}
}
default:
return ret_error;
}
return ret;
}
static ssize_t defendkey_write(struct file *file,
@@ -357,6 +372,7 @@ static struct class defendkey_class = {
static int __init early_defendkey_para(char *buf)
{
int ret;
struct page *page = NULL;
if (!buf)
return -EINVAL;
@@ -368,6 +384,12 @@ static int __init early_defendkey_para(char *buf)
return -EINVAL;
}
page = pfn_to_page(defendkey_rmem.base >> PAGE_SHIFT);
if (PageHighMem(page)) {
pr_err("invalid boot args \"defendkey\"\n");
return -EINVAL;
}
pr_info("%s, base:%lx, size:%lx\n",
__func__, defendkey_rmem.base, defendkey_rmem.size);

1
drivers/amlogic/defendkey/securekey.h
View File

@@ -18,6 +18,7 @@
#if (defined CONFIG_ARM64) || (defined CONFIG_ARM64_A32)
#define AML_D_P_UPGRADE_CHECK (0x80)
#define AML_D_P_IMG_DECRYPT (0x40)
#define AML_D_Q_IMG_SIG_HDR_SIZE (0x100)
#define AML_DATA_PROCESS (0x820000FF)
#define GET_SHARE_MEM_INPUT_BASE 0x82000020