mirror of
git://nv-tegra.nvidia.com/linux-nv-oot.git
synced 2025-12-22 09:11:26 +03:00
a01851131c
Add driver for common utility API for firmware class and dumping the inventory for all firmware. Bug 3583607 Change-Id: I259bc7f80b8842cea090f67b067f63e5f85cb79c Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2708890 GVS: Gerrit_Virtual_Submit
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (c) 2022, NVIDIA CORPORATION, All rights reserved.
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/device.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/tegra-firmwares.h>
|
|
#include <linux/cpu.h>
|
|
#include <asm/cpu.h>
|
|
|
|
#if IS_ENABLED(CONFIG_TRUSTY)
|
|
#include <linux/trusty/trusty.h>
|
|
|
|
static ssize_t tegrafw_read_trusty(struct device *dev,
|
|
char *data, size_t size)
|
|
{
|
|
const struct of_device_id trusty_of_match[] = {
|
|
{.compatible = "android,trusty-smc-v1", },
|
|
{},
|
|
};
|
|
struct device_node *dn;
|
|
struct platform_device *pdev;
|
|
|
|
for_each_matching_node(dn, trusty_of_match) {
|
|
pdev = of_find_device_by_node(dn);
|
|
if (pdev == NULL)
|
|
continue;
|
|
return snprintf(data, size, "%s",
|
|
trusty_version_str_get(&pdev->dev));
|
|
}
|
|
snprintf(data, size, "NULL");
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* TBD: cpu_data is define in arch/arm64/kernel/cpuinfo.c
|
|
* It is not exported and hence defining locally for the
|
|
* build success.
|
|
* Denver FW need to be deprecated.
|
|
*/
|
|
DEFINE_PER_CPU(struct cpuinfo_arm64, cpu_data);
|
|
static ssize_t tegrafw_read_denver(struct device *dev,
|
|
char *version, size_t size)
|
|
{
|
|
char *v = version;
|
|
int i;
|
|
size_t printed = 0;
|
|
|
|
for_each_online_cpu(i) {
|
|
struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
|
|
u32 midr = cpuinfo->reg_midr;
|
|
u32 aidr;
|
|
|
|
if (MIDR_IMPLEMENTOR(midr) == ARM_CPU_IMP_NVIDIA) {
|
|
asm volatile("mrs %0, AIDR_EL1" : "=r" (aidr) : );
|
|
printed = snprintf(v, size, "CPU%d: %u(0x%x) ",
|
|
i, aidr, aidr);
|
|
size -= printed;
|
|
v += printed;
|
|
}
|
|
}
|
|
|
|
return v - version;
|
|
}
|
|
|
|
#define FIRMWARES_SIZE 10
|
|
static struct device *firmwares[FIRMWARES_SIZE];
|
|
#define check_out_of_bounds(dev, err) \
|
|
if ((dev) - firmwares >= ARRAY_SIZE(firmwares)) { \
|
|
pr_err("Cannot register 'legacy' firmware info: increase " \
|
|
"firmwares array size"); \
|
|
return (err); \
|
|
}
|
|
|
|
static int __init tegra_firmwares_init(void)
|
|
{
|
|
struct device **dev = firmwares;
|
|
char *versions[] = { "mb1", "mb2", "mb1-bct", "qb", "osl" };
|
|
int v;
|
|
|
|
check_out_of_bounds(dev, 0);
|
|
*dev++ = tegrafw_register("MTS", TFW_NORMAL, tegrafw_read_denver, NULL);
|
|
|
|
#if IS_ENABLED(CONFIG_TRUSTY)
|
|
check_out_of_bounds(dev, 0);
|
|
*dev++ = tegrafw_register("trusty", TFW_DONT_CACHE,
|
|
tegrafw_read_trusty, NULL);
|
|
#endif
|
|
|
|
for (v = 0; v < ARRAY_SIZE(versions); v++) {
|
|
check_out_of_bounds(dev, 0);
|
|
*dev++ = tegrafw_register_dt_string(versions[v],
|
|
"/tegra-firmwares", versions[v]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void __exit tegra_firmwares_exit(void)
|
|
{
|
|
struct device **dev = firmwares;
|
|
|
|
while (dev - firmwares < ARRAY_SIZE(firmwares))
|
|
tegrafw_unregister(*dev++);
|
|
}
|
|
module_init(tegra_firmwares_init);
|
|
module_exit(tegra_firmwares_exit);
|
|
|
|
MODULE_DESCRIPTION("Firmware info drivers");
|
|
MODULE_AUTHOR("dmitry pervushin <dpervushin@nvidia.com>");
|
|
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
|
|
MODULE_LICENSE("GPL v2");
|