feat(tc): populate HW_CONFIG in BL31
BL2 passes FW_CONFIG to BL31 which contains information
about different DTBs present. BL31 then uses FW_CONFIG
to get the base address of HW_CONFIG and populate fconf.
Signed-off-by: Usama Arif <usama.arif@arm.com>
Change-Id: I0b4fc83e6e0a0b9401f692516654eb9a3b037616
diff --git a/plat/arm/board/tc/fdts/tc_fw_config.dts b/plat/arm/board/tc/fdts/tc_fw_config.dts
index 4b6abd4..a84c7f8 100644
--- a/plat/arm/board/tc/fdts/tc_fw_config.dts
+++ b/plat/arm/board/tc/fdts/tc_fw_config.dts
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2020, Arm Limited. All rights reserved.
+ * Copyright (c) 2020-2021, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -26,7 +26,7 @@
hw-config {
load-address = <0x0 0x83000000>;
- max-size = <0x01000000>;
+ max-size = <0x8000>;
id = <HW_CONFIG_ID>;
};
};
diff --git a/plat/arm/board/tc/include/platform_def.h b/plat/arm/board/tc/include/platform_def.h
index c8edd2f..ccabced 100644
--- a/plat/arm/board/tc/include/platform_def.h
+++ b/plat/arm/board/tc/include/platform_def.h
@@ -55,6 +55,14 @@
TC_TZC_DRAM1_BASE, \
TC_TZC_DRAM1_SIZE, \
MT_MEMORY | MT_RW | MT_SECURE)
+
+#define PLAT_HW_CONFIG_DTB_BASE ULL(0x83000000)
+#define PLAT_HW_CONFIG_DTB_SIZE ULL(0x8000)
+
+#define PLAT_DTB_DRAM_NS MAP_REGION_FLAT( \
+ PLAT_HW_CONFIG_DTB_BASE, \
+ PLAT_HW_CONFIG_DTB_SIZE, \
+ MT_MEMORY | MT_RO | MT_NS)
/*
* Max size of SPMC is 2MB for tc. With SPMD enabled this value corresponds to
* max size of BL32 image.
@@ -122,7 +130,7 @@
* calculated using the current BL31 PROGBITS debug size plus the sizes of
* BL2 and BL1-RW
*/
-#define PLAT_ARM_MAX_BL31_SIZE 0x3B000
+#define PLAT_ARM_MAX_BL31_SIZE 0x3F000
/*
* Size of cacheable stacks
diff --git a/plat/arm/board/tc/platform.mk b/plat/arm/board/tc/platform.mk
index 8db764c..d0629fd 100644
--- a/plat/arm/board/tc/platform.mk
+++ b/plat/arm/board/tc/platform.mk
@@ -77,6 +77,7 @@
BL2_SOURCES += ${TC_BASE}/tc_security.c \
${TC_BASE}/tc_err.c \
${TC_BASE}/tc_trusted_boot.c \
+ ${TC_BASE}/tc_bl2_setup.c \
lib/utils/mem_region.c \
drivers/arm/tzc/tzc400.c \
plat/arm/common/arm_tzc400.c \
@@ -87,6 +88,9 @@
${ENT_GIC_SOURCES} \
${TC_BASE}/tc_bl31_setup.c \
${TC_BASE}/tc_topology.c \
+ common/fdt_wrappers.c \
+ lib/fconf/fconf.c \
+ lib/fconf/fconf_dyn_cfg_getter.c \
drivers/cfi/v2m/v2m_flash.c \
lib/utils/mem_region.c \
plat/arm/common/arm_nor_psci_mem_protect.c
diff --git a/plat/arm/board/tc/tc_bl2_setup.c b/plat/arm/board/tc/tc_bl2_setup.c
new file mode 100644
index 0000000..74ef569
--- /dev/null
+++ b/plat/arm/board/tc/tc_bl2_setup.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2021, ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <common/bl_common.h>
+#include <common/desc_image_load.h>
+#include <lib/fconf/fconf.h>
+#include <lib/fconf/fconf_dyn_cfg_getter.h>
+
+#include <plat/arm/common/plat_arm.h>
+
+/*******************************************************************************
+ * This function returns the list of executable images
+ ******************************************************************************/
+struct bl_params *plat_get_next_bl_params(void)
+{
+ struct bl_params *arm_bl_params = arm_get_next_bl_params();
+
+ const struct dyn_cfg_dtb_info_t *fw_config_info;
+ bl_mem_params_node_t *param_node;
+ uintptr_t fw_config_base = 0U;
+ entry_point_info_t *ep_info;
+
+ /* Get BL31 image node */
+ param_node = get_bl_mem_params_node(BL31_IMAGE_ID);
+ assert(param_node != NULL);
+
+ /* Get fw_config load address */
+ fw_config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, FW_CONFIG_ID);
+ assert(fw_config_info != NULL);
+
+ fw_config_base = fw_config_info->config_addr;
+ assert(fw_config_base != 0U);
+
+ /*
+ * Get the entry point info of BL31 image and override
+ * arg1 of entry point info with fw_config base address
+ */
+ ep_info = ¶m_node->ep_info;
+ ep_info->args.arg1 = (uint32_t)fw_config_base;
+
+ return arm_bl_params;
+}
diff --git a/plat/arm/board/tc/tc_bl31_setup.c b/plat/arm/board/tc/tc_bl31_setup.c
index ecec26c..0523ef8 100644
--- a/plat/arm/board/tc/tc_bl31_setup.c
+++ b/plat/arm/board/tc/tc_bl31_setup.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020-2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -13,6 +13,8 @@
#include <common/debug.h>
#include <drivers/arm/css/css_mhu_doorbell.h>
#include <drivers/arm/css/scmi.h>
+#include <lib/fconf/fconf.h>
+#include <lib/fconf/fconf_dyn_cfg_getter.h>
#include <plat/arm/common/plat_arm.h>
#include <plat/common/platform.h>
@@ -42,6 +44,9 @@
u_register_t arg2, u_register_t arg3)
{
arm_bl31_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3);
+
+ /* Fill the properties struct with the info from the config dtb */
+ fconf_populate("FW_CONFIG", arg1);
}
void tc_bl31_common_platform_setup(void)
@@ -53,3 +58,16 @@
{
return css_scmi_override_pm_ops(ops);
}
+
+void __init bl31_plat_arch_setup(void)
+{
+ arm_bl31_plat_arch_setup();
+
+ /* HW_CONFIG was also loaded by BL2 */
+ const struct dyn_cfg_dtb_info_t *hw_config_info;
+
+ hw_config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, HW_CONFIG_ID);
+ assert(hw_config_info != NULL);
+
+ fconf_populate("HW_CONFIG", hw_config_info->config_addr);
+}
diff --git a/plat/arm/board/tc/tc_plat.c b/plat/arm/board/tc/tc_plat.c
index 3863a0a..a9668e1 100644
--- a/plat/arm/board/tc/tc_plat.c
+++ b/plat/arm/board/tc/tc_plat.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020-2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -63,6 +63,7 @@
ARM_MAP_SHARED_RAM,
V2M_MAP_IOFPGA,
TC_MAP_DEVICE,
+ PLAT_DTB_DRAM_NS,
#if SPM_MM
ARM_SPM_BUF_EL3_MMAP,
#endif