mtk-lk/platform/common/emi/emi_info_v1.c

/* Copyright Statement:
*
* This software/firmware and related documentation ("MediaTek Software") are
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*/
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* The following software/firmware and/or related documentation ("MediaTek Software")
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#include <platform/boot_mode.h>
#include <libfdt.h>
#include <debug.h>

extern BOOT_ARGUMENT *g_boot_arg;

int set_fdt_emi_info(void *fdt)
{
	int ret = 0;
	int offset;
	unsigned int i;
	unsigned int dram_type;
	unsigned int ch_num;
	unsigned int rk_num;
	unsigned int rank_size[MAX_RK];

	if (!fdt)
		return -1;

	offset = fdt_path_offset(fdt, "/emi");
	if (offset < 0)
		return offset;

	dram_type = cpu_to_fdt32(g_boot_arg->emi_info.dram_type);
	ch_num = cpu_to_fdt32(g_boot_arg->emi_info.ch_num);
	rk_num = cpu_to_fdt32(g_boot_arg->emi_info.rk_num);

	/* unit of rank size: 1Gb (128MB) */
	for (i = 0; i < MAX_RK; i++) {
		if (i < rk_num) {
			rank_size[i] = (g_boot_arg->emi_info.rank_size[i] >> 27) & 0xFFFFFFFF;
			rank_size[i] = cpu_to_fdt32(rank_size[i]);
		} else {
			rank_size[i] = cpu_to_fdt32(0);
		}
	}

	/* pass parameter to kernel */
	ret = fdt_setprop(fdt, offset, "emi_info,dram_type", &dram_type, sizeof(dram_type));
	if (ret < 0)
		return ret;

	ret = fdt_setprop(fdt, offset, "emi_info,ch_num", &ch_num, sizeof(ch_num));
	if (ret < 0)
		return ret;

	ret = fdt_setprop(fdt, offset, "emi_info,rk_num", &rk_num, sizeof(rk_num));
	if (ret < 0)
		return ret;

	ret = fdt_setprop(fdt, offset, "emi_info,rank_size", rank_size, sizeof(rank_size));

	return ret;
}