soc.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootmode.h>
#include <console/console.h>
#include <device/device.h>
#include <soc/nvidia/tegra/dc.h>
#include <soc/display.h>
#include <soc/sdram.h>
#include <symbols.h>
 
#include "chip.h"
 
/* this sucks, but for now, fb size/location are hardcoded.
 * Will break if we get 2. Sigh.
 * We assume it's all multiples of MiB for MMUs sake.
 */
static void soc_read_resources(struct device *dev)
{
        u32 lcdbase = fb_base_mb();
        unsigned long fb_size = FB_SIZE_MB;
 
        ram_resource(dev, 0, (uintptr_t)_dram/KiB,
                (sdram_max_addressable_mb() - fb_size)*KiB -
                (uintptr_t)_dram/KiB);
        mmio_resource(dev, 1, lcdbase*KiB, fb_size*KiB);
 
        u32 sdram_end_mb = sdram_size_mb() + (uintptr_t)_dram/MiB;
 
        if (sdram_end_mb > sdram_max_addressable_mb())
                ram_resource(dev, 2, sdram_max_addressable_mb()*KiB,
                        (sdram_end_mb - sdram_max_addressable_mb())*KiB);
}
 
static void soc_init(struct device *dev)
{
        if (display_init_required())
                display_startup(dev);
        else
                printk(BIOS_INFO, "Skipping display init.\n");
        printk(BIOS_INFO, "CPU: Tegra124\n");
}
 
static struct device_operations soc_ops = {
        .read_resources   = soc_read_resources,
        .set_resources    = noop_set_resources,
        .init             = soc_init,
};
 
static void enable_tegra124_dev(struct device *dev)
{
        dev->ops = &soc_ops;
}
 
struct chip_operations soc_nvidia_tegra124_ops = {
        CHIP_NAME("SOC Nvidia Tegra124")
        .enable_dev = enable_tegra124_dev,
};