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platform: Make the platform read-only

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platform should be a read-only variable, if it is placed in the data
segment, it may be exploited.

Signed-off-by: Xiang Wang <wxjstz@126.com>
This commit is contained in:
Xiang Wang
2019-03-06 15:29:34 +08:00
committed by Atish Patra
parent 27fae182dc
commit 9eb8f0f90d
11 changed files with 45 additions and 43 deletions
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4
lib/sbi_ipi.c
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@@ -22,7 +22,7 @@
static int sbi_ipi_send(struct sbi_scratch *scratch, u32 hartid, u32 event)
{
struct sbi_scratch *remote_scratch = NULL;
struct sbi_platform *plat = sbi_platform_ptr(scratch);
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
if (sbi_platform_hart_disabled(plat, hartid))
return -1;
@@ -72,7 +72,7 @@ void sbi_ipi_clear_smode(struct sbi_scratch *scratch)
void sbi_ipi_process(struct sbi_scratch *scratch)
{
struct sbi_platform *plat = sbi_platform_ptr(scratch);
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
volatile unsigned long ipi_type;
unsigned int ipi_event;
u32 hartid = sbi_current_hartid();