diff options
Diffstat (limited to 'plat/amlogic/g12a/g12a_bl31_setup.c')
| -rw-r--r-- | plat/amlogic/g12a/g12a_bl31_setup.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/plat/amlogic/g12a/g12a_bl31_setup.c b/plat/amlogic/g12a/g12a_bl31_setup.c new file mode 100644 index 0000000..77057a1 --- /dev/null +++ b/plat/amlogic/g12a/g12a_bl31_setup.c @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <common/bl_common.h> +#include <common/interrupt_props.h> +#include <drivers/arm/gicv2.h> +#include <lib/mmio.h> +#include <lib/xlat_tables/xlat_mmu_helpers.h> +#include <plat/common/platform.h> +#include <platform_def.h> + +#include "aml_private.h" + +/* + * Placeholder variables for copying the arguments that have been passed to + * BL31 from BL2. + */ +static entry_point_info_t bl32_image_ep_info; +static entry_point_info_t bl33_image_ep_info; +static image_info_t bl30_image_info; +static image_info_t bl301_image_info; + +/******************************************************************************* + * Return a pointer to the 'entry_point_info' structure of the next image for + * the security state specified. BL33 corresponds to the non-secure image type + * while BL32 corresponds to the secure image type. A NULL pointer is returned + * if the image does not exist. + ******************************************************************************/ +entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) +{ + entry_point_info_t *next_image_info; + + next_image_info = (type == NON_SECURE) ? + &bl33_image_ep_info : &bl32_image_ep_info; + + /* None of the images can have 0x0 as the entrypoint. */ + if (next_image_info->pc != 0U) + return next_image_info; + + return NULL; +} + +/******************************************************************************* + * Perform any BL31 early platform setup. Here is an opportunity to copy + * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before + * they are lost (potentially). This needs to be done before the MMU is + * initialized so that the memory layout can be used while creating page + * tables. BL2 has flushed this information to memory, so we are guaranteed + * to pick up good data. + ******************************************************************************/ +struct g12a_bl31_param { + param_header_t h; + image_info_t *bl31_image_info; + entry_point_info_t *bl32_ep_info; + image_info_t *bl32_image_info; + entry_point_info_t *bl33_ep_info; + image_info_t *bl33_image_info; + image_info_t *scp_image_info[]; +}; + +void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, + u_register_t arg2, u_register_t arg3) +{ + struct g12a_bl31_param *from_bl2; + + /* Initialize the console to provide early debug support */ + aml_console_init(); + + from_bl2 = (struct g12a_bl31_param *)arg0; + + /* Check params passed from BL2 are not NULL. */ + assert(from_bl2 != NULL); + assert(from_bl2->h.type == PARAM_BL31); + assert(from_bl2->h.version >= VERSION_1); + + /* + * Copy BL32 and BL33 entry point information. It is stored in Secure + * RAM, in BL2's address space. + */ + bl32_image_ep_info = *from_bl2->bl32_ep_info; + bl33_image_ep_info = *from_bl2->bl33_ep_info; + + if (bl33_image_ep_info.pc == 0U) { + ERROR("BL31: BL33 entrypoint not obtained from BL2\n"); + panic(); + } + + bl30_image_info = *from_bl2->scp_image_info[0]; + bl301_image_info = *from_bl2->scp_image_info[1]; +} + +void bl31_plat_arch_setup(void) +{ + aml_setup_page_tables(); + + enable_mmu_el3(0); +} + +/******************************************************************************* + * GICv2 driver setup information + ******************************************************************************/ +static const interrupt_prop_t g12a_interrupt_props[] = { + INTR_PROP_DESC(IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), + INTR_PROP_DESC(IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY, + GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL) +}; + +static const gicv2_driver_data_t g12a_gic_data = { + .gicd_base = AML_GICD_BASE, + .gicc_base = AML_GICC_BASE, + .interrupt_props = g12a_interrupt_props, + .interrupt_props_num = ARRAY_SIZE(g12a_interrupt_props) +}; + +void bl31_platform_setup(void) +{ + aml_mhu_secure_init(); + + gicv2_driver_init(&g12a_gic_data); + gicv2_distif_init(); + gicv2_pcpu_distif_init(); + gicv2_cpuif_enable(); +} |