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https://github.com/openhwgroup/cvw
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77 lines
3.1 KiB
C
77 lines
3.1 KiB
C
///////////////////////////////////////////////////////////////////////
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// boot.h
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//
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// Written: Jaocb Pease jacob.pease@okstate.edu 7/22/2024
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//
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// Purpose: Header for boot.c, main bootloader entry point
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//
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//
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//
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// A component of the Wally configurable RISC-V project.
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//
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// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
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//
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// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
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//
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// Licensed under the Solderpad Hardware License v 2.1 (the
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// “License”); you may not use this file except in compliance with the
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// License, or, at your option, the Apache License version 2.0. You
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// may obtain a copy of the License at
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//
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// https://solderpad.org/licenses/SHL-2.1/
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//
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// Unless required by applicable law or agreed to in writing, any work
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// distributed under the License is distributed on an “AS IS” BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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///////////////////////////////////////////////////////////////////////
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#ifndef WALLYBOOT
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#define WALLYBOOT 10000
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#include <stdint.h>
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typedef unsigned int UINT; /* int must be 16-bit or 32-bit */
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typedef unsigned char BYTE; /* char must be 8-bit */
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typedef uint16_t WORD; /* 16-bit unsigned integer */
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typedef uint32_t DWORD; /* 32-bit unsigned integer */
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typedef uint64_t QWORD; /* 64-bit unsigned integer */
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typedef WORD WCHAR;
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typedef QWORD LBA_t;
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// Define memory locations of boot images =====================
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// These locations are copied from the generic configuration
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// of OpenSBI. These addresses can be found in:
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// buildroot/output/build/opensbi-0.9/platform/generic/config.mk
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#define FDT_ADDRESS 0x87000000 // FW_JUMP_FDT_ADDR
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#define OPENSBI_ADDRESS 0x80000000 // FW_TEXT_START
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#define KERNEL_ADDRESS 0x80200000 // FW_JUMP_ADDR
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#define BANNER " █▀█ █▀█ █▀█ █▀▀ █ █\r\n" \
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" █ █ █ █▄▀ █▄▄ ▄▄▄ █ █\r\n" \
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" █▄█ █▄█ █ █ █▄▄ ▀▄▀\r\n" \
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" ____ ____ ____ ___ ___ ____ ___\r\n" \
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" \\ \\ / / / \\ | | | | \\ \\ / /\r\n" \
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" \\ \\ __ / / / \\ | | | | \\ \\/ /\r\n" \
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" \\ \\/ \\/ / / /\\ \\ | | | | \\ /\r\n" \
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" \\ / / ____ \\ | |___ | |___ | |\r\n" \
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" \\___/\\___/ /___/ \\___\\|_______||_______| |___|\r\n\r\n"
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// Export disk_read
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int disk_read(BYTE * buf, LBA_t sector, UINT count);
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#define SYSTEMCLOCK 20000000
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// TODO: This line needs to change back to 20MHz when we fix the
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// timing problems.
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#define MAXSDCCLOCK 5000000
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// Maximum SDC speed is either the system clock divided by 2 (because
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// of the SPI peripheral clock division) or the maximum speed an SD
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// card can be pushed to.
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#define SDCCLOCK (SYSTEMCLOCK/2 > MAXSDCCLOCK ? MAXSDCCLOCK : SYSTEMCLOCK/2)
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#endif // WALLYBOOT
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