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arm: mach-k3: security: Use dma-mapping for cache ops

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This matches how this would be done in Linux and these functions
do the alignment for us which makes the code look cleaner.

Signed-off-by: Andrew Davis <afd@ti.com>
This commit is contained in:
Andrew Davis 2022-10-07 12:12:29 -05:00 • committed by Tom Rini
parent b9add6413d
commit b0931d1bd1
1 changed files with 6 additions and 8 deletions
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14
arch/arm/mach-k3/security.c
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@ -18,6 +18,7 @@
#include <mach/spl.h>
#include <spl.h>
#include <asm/arch/sys_proto.h>
#include <linux/dma-mapping.h>
#include "common.h"
@ -47,7 +48,6 @@ void ti_secure_image_post_process(void **p_image, size_t *p_size)
u32 image_size;
int ret;
image_addr = (uintptr_t)*p_image;
image_size = *p_size;
if (!image_size)
@ -80,13 +80,12 @@ void ti_secure_image_post_process(void **p_image, size_t *p_size)
return;
}
/* Clean out image so it can be seen by system firmware */
image_addr = dma_map_single(*p_image, *p_size, DMA_BIDIRECTIONAL);
debug("Authenticating image at address 0x%016llx\n", image_addr);
debug("Authenticating image of size %d bytes\n", image_size);
flush_dcache_range((unsigned long)image_addr,
ALIGN((unsigned long)image_addr + image_size,
ARCH_DMA_MINALIGN));
/* Authenticate image */
ret = proc_ops->proc_auth_boot_image(ti_sci, &image_addr, &image_size);
if (ret) {
@ -94,10 +93,9 @@ void ti_secure_image_post_process(void **p_image, size_t *p_size)
hang();
}
/* Invalidate any stale lines over data written by system firmware */
if (image_size)
invalidate_dcache_range((unsigned long)image_addr,
ALIGN((unsigned long)image_addr +
image_size, ARCH_DMA_MINALIGN));
dma_unmap_single(image_addr, image_size, DMA_BIDIRECTIONAL);
/*
* The image_size returned may be 0 when the authentication process has