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feb423a3a3
Add generic logic to determine the ram_top value for boards. Earlier, this was achieved in an indirect manner through a set of LMB API's. That has since changed so that the LMB code is available only after relocation. Replace those LMB calls with a single call to get_mem_top() to determine the value of ram_top. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/20241025172724.195093-2-sughosh.ganu@linaro.org Signed-off-by: Michal Simek <michal.simek@amd.com>
23 lines
700 B
C
23 lines
700 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2024, Linaro Limited
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*/
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/**
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* get_mem_top() - Compute the value of ram_top
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* @ram_start: Start of RAM
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* @ram_size: RAM size
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* @size: Minimum RAM size requested
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* @fdt: FDT blob
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*
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* The function computes the top address of RAM memory that can be
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* used by U-Boot. This is being done by going through the list of
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* reserved memory regions specified in the devicetree blob passed
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* to the function. The logic used here is derived from the lmb
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* allocation function.
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*
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* Return: address of ram top on success, 0 on failure
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*/
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phys_addr_t get_mem_top(phys_addr_t ram_start, phys_size_t ram_size,
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phys_size_t size, void *fdt);
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