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4f2f66a280
Implement VideoCore mailbox interface driver and use it to get the board revision identifier. For now it is only used to print the model for debug purposes. This wiki contains the documentation of the mailbox interface: https://github.com/raspberrypi/firmware/wiki Change-Id: I11943b99b52cc1409f4a195ebe58eb44ae5b1d6c Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <arch.h>
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#include <arch_helpers.h>
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#include <bl_common.h>
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#include <debug.h>
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#include <platform_def.h>
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#include <xlat_mmu_helpers.h>
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#include <xlat_tables_defs.h>
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#include "../../bl1/bl1_private.h"
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#include "rpi3_private.h"
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/* Data structure which holds the extents of the trusted SRAM for BL1 */
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static meminfo_t bl1_tzram_layout;
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meminfo_t *bl1_plat_sec_mem_layout(void)
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{
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return &bl1_tzram_layout;
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}
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/*******************************************************************************
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* Perform any BL1 specific platform actions.
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******************************************************************************/
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void bl1_early_platform_setup(void)
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{
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/* Initialize the console to provide early debug support */
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rpi3_console_init();
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/* Allow BL1 to see the whole Trusted RAM */
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bl1_tzram_layout.total_base = BL_RAM_BASE;
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bl1_tzram_layout.total_size = BL_RAM_SIZE;
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}
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/******************************************************************************
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* Perform the very early platform specific architecture setup. This only
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* does basic initialization. Later architectural setup (bl1_arch_setup())
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* does not do anything platform specific.
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*****************************************************************************/
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void bl1_plat_arch_setup(void)
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{
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rpi3_setup_page_tables(bl1_tzram_layout.total_base,
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bl1_tzram_layout.total_size,
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BL_CODE_BASE, BL1_CODE_END,
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BL1_RO_DATA_BASE, BL1_RO_DATA_END
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#if USE_COHERENT_MEM
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, BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END
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#endif
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);
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enable_mmu_el3(0);
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}
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void bl1_platform_setup(void)
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{
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uint32_t __unused rev;
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int __unused rc;
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rc = rpi3_vc_hardware_get_board_revision(&rev);
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if (rc == 0) {
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const char __unused *model, __unused *info;
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switch (rev) {
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case 0xA02082:
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model = "Raspberry Pi 3 Model B";
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info = "(1GB, Sony, UK)";
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break;
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case 0xA22082:
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model = "Raspberry Pi 3 Model B";
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info = "(1GB, Embest, China)";
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break;
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case 0xA020D3:
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model = "Raspberry Pi 3 Model B+";
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info = "(1GB, Sony, UK)";
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break;
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default:
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model = "Unknown";
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info = "(Unknown)";
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ERROR("rpi3: Unknown board revision 0x%08x\n", rev);
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break;
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}
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NOTICE("rpi3: Detected: %s %s [0x%08x]\n", model, info, rev);
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} else {
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ERROR("rpi3: Unable to detect board revision\n");
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}
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/* Initialise the IO layer and register platform IO devices */
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plat_rpi3_io_setup();
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}
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