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Merge changes Ided750de,Id3cc887c into integration

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* changes:
  docs(gxl): add build instructions for booting BL31 from U-Boot SPL
  feat(gxl): add support for booting from U-Boot SPL/with standard params
This commit is contained in:
Lauren Wehrmeister 2025-01-24 23:26:44 +01:00 • committed by TrustedFirmware Code Review
commit bba792b165
3 changed files with 34 additions and 2 deletions
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6
docs/plat/meson-gxl.rst
View file

@ -19,6 +19,12 @@ In order to build it:
CROSS_COMPILE=aarch64-linux-gnu- make DEBUG=1 PLAT=gxl
Or, if willing to boot from U-Boot SPL (using standard params handling):
.. code:: shell
CROSS_COMPILE=aarch64-linux-gnu- make DEBUG=1 PLAT=gxl AML_STDPARAMS=1
This port has been tested on a Lepotato. After building it, follow the
instructions in the `gxlimg repository`_ or `U-Boot repository`_, replacing the
mentioned **bl31.img** by the one built from this port.

24
plat/amlogic/gxl/gxl_bl31_setup.c
View file

@ -1,11 +1,13 @@
/*
* Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2018-2025, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/bl_common.h>
#ifdef AML_STDPARAMS
#include <common/desc_image_load.h>
#endif
#include <common/interrupt_props.h>
#include <drivers/arm/gicv2.h>
#include <lib/mmio.h>
@ -60,17 +62,26 @@ struct gxl_bl31_param {
image_info_t *bl32_image_info;
entry_point_info_t *bl33_ep_info;
image_info_t *bl33_image_info;
#ifndef AML_STDPARAMS
image_info_t *scp_image_info[];
#endif
};
void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
#ifndef AML_STDPARAMS
struct gxl_bl31_param *from_bl2;
#endif
/* Initialize the console to provide early debug support */
aml_console_init();
#ifdef AML_STDPARAMS
/* Parse arguments passed to BL31 from U-Boot SPL */
bl31_params_parse_helper(arg0, &bl33_image_ep_info,
&bl33_image_ep_info);
#else
/* Check that params passed from BL2 are not NULL. */
from_bl2 = (struct gxl_bl31_param *) arg0;
@ -84,14 +95,23 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
* BL2's address space.
*/
bl33_image_ep_info = *from_bl2->bl33_ep_info;
#endif
if (bl33_image_ep_info.pc == 0U) {
ERROR("BL31: BL33 entrypoint not obtained from BL2\n");
panic();
}
#ifdef AML_STDPARAMS
/* Hardcode SCP_BL2 image info */
bl30_image_info.image_base = 0x13c0000;
bl30_image_info.image_size = 0xa000;
bl301_image_info.image_base = 0x13ca000;
bl301_image_info.image_size = 0x3400;
#else
bl30_image_info = *from_bl2->scp_image_info[0];
bl301_image_info = *from_bl2->scp_image_info[1];
#endif
}
void bl31_plat_arch_setup(void)

6
plat/amlogic/gxl/platform.mk
View file

@ -40,6 +40,12 @@ BL31_SOURCES += lib/cpus/aarch64/cortex_a53.S \
${XLAT_TABLES_LIB_SRCS} \
${GIC_SOURCES}
ifeq (${AML_STDPARAMS}, 1)
BL31_SOURCES += common/desc_image_load.c
$(eval $(call add_define_val,AML_STDPARAMS,'$(AML_STDPARAMS)'))
$(info "Building with standard params")
endif
# Tune compiler for Cortex-A53
ifeq ($($(ARCH)-cc-id),arm-clang)
TF_CFLAGS_aarch64 += -mcpu=cortex-a53