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bc99e707cd
Instead of placing FDT (passed by previous booting stage) at a location relative to next address we should have absolute location of placing FDT so that we more freedom of placing FDT. This will be particularly useful for platforms/boards with very less RAM (such as Kendryte board). Due to above motivation, we rename FW_xyz_FDT_OFFSET options to FW_xyz_FDT_ADDR options and use FW_xyz_FDT_ADDR options as absolute address for placing FDT. Signed-off-by: Anup Patel <anup.patel@wdc.com>
41 lines
758 B
ArmAsm
41 lines
758 B
ArmAsm
/*
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* Copyright (c) 2018 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "fw_common.S"
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.align 3
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.section .entry, "ax", %progbits
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.global fw_next_arg1
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fw_next_arg1:
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/* We return FDT destination address in 'a0' */
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#ifdef FW_JUMP_FDT_ADDR
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/* a0 = destination FDT start address */
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li a0, FW_JUMP_FDT_ADDR
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#else
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add a0, zero, zero
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#endif
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ret
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.align 3
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.section .entry, "ax", %progbits
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.global fw_next_addr
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fw_next_addr:
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/* We return next address in 'a0' */
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la a0, _jump_addr
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REG_L a0, (a0)
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ret
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#ifndef FW_JUMP_ADDR
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#error "Must define FW_JUMP_ADDR"
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#endif
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.align 3
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.section .entry, "ax", %progbits
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_jump_addr:
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RISCV_PTR FW_JUMP_ADDR
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