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uniphier: pass SCP base address as a function parameter

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Currently, UNIPHIER_SCP_BASE is hard-coded in uniphier_scp_start(),
which is not handy for PIE.

Towards the goal of making this really position-independent, pass in
image_info->image_base.

Change-Id: I88e020a1919c607b1d5ce70b116201d95773bb63
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2020-01-17 13:46:23 +09:00
parent b79b3177d3
commit 577b24411a
3 changed files with 6 additions and 8 deletions
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2
plat/socionext/uniphier/uniphier.h
View file

@ -48,7 +48,7 @@ struct image_info;
struct image_info *uniphier_get_image_info(unsigned int image_id);
int uniphier_scp_is_running(void);
void uniphier_scp_start(void);
void uniphier_scp_start(uint32_t scp_base);
void uniphier_scp_open_com(void);
void uniphier_scp_system_off(void);
void uniphier_scp_system_reset(void);

6
plat/socionext/uniphier/uniphier_bl2_setup.c
View file

@ -149,12 +149,10 @@ int bl2_plat_handle_pre_image_load(unsigned int image_id)
int bl2_plat_handle_post_image_load(unsigned int image_id)
{
struct image_info *image_info = uniphier_get_image_info(image_id);
#ifdef UNIPHIER_DECOMPRESS_GZIP
struct image_info *image_info;
int ret;
image_info = uniphier_get_image_info(image_id);
if (!(image_info->h.attr & IMAGE_ATTRIB_SKIP_LOADING)) {
ret = image_decompress(uniphier_get_image_info(image_id));
if (ret)
@ -163,7 +161,7 @@ int bl2_plat_handle_post_image_load(unsigned int image_id)
#endif
if (image_id == SCP_BL2_IMAGE_ID && uniphier_bl2_kick_scp)
uniphier_scp_start();
uniphier_scp_start(image_info->image_base);
return 0;
}

6
plat/socionext/uniphier/uniphier_scp.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -28,11 +28,11 @@ int uniphier_scp_is_running(void)
return mmio_read_32(UNIPHIER_STMBE2COM) == UNIPHIER_SCP_READY_MAGIC;
}
void uniphier_scp_start(void)
void uniphier_scp_start(uint32_t scp_base)
{
uint32_t tmp;
mmio_write_32(UNIPHIER_STMBE2COM + 4, UNIPHIER_SCP_BASE);
mmio_write_32(UNIPHIER_STMBE2COM + 4, scp_base);
mmio_write_32(UNIPHIER_STMBE2COM, UNIPHIER_SCP_READY_MAGIC);
do {