mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +00:00
03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2012-2013
|
|
* NVIDIA Corporation <www.nvidia.com>
|
|
*
|
|
* (C) Copyright 2022
|
|
* Svyatoslav Ryhel <clamor95@gmail.com>
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <asm/io.h>
|
|
|
|
#include <asm/arch/tegra.h>
|
|
#include <asm/arch/gp_padctrl.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch-tegra/fuse.h>
|
|
|
|
#include "cpu.h"
|
|
|
|
#define FUSE_UID_LOW 0x108
|
|
#define FUSE_UID_HIGH 0x10c
|
|
|
|
#define FUSE_VENDOR_CODE 0x200
|
|
#define FUSE_FAB_CODE 0x204
|
|
#define FUSE_LOT_CODE_0 0x208
|
|
#define FUSE_LOT_CODE_1 0x20c
|
|
#define FUSE_WAFER_ID 0x210
|
|
#define FUSE_X_COORDINATE 0x214
|
|
#define FUSE_Y_COORDINATE 0x218
|
|
|
|
#define FUSE_VENDOR_CODE_MASK 0xf
|
|
#define FUSE_FAB_CODE_MASK 0x3f
|
|
#define FUSE_WAFER_ID_MASK 0x3f
|
|
#define FUSE_X_COORDINATE_MASK 0x1ff
|
|
#define FUSE_Y_COORDINATE_MASK 0x1ff
|
|
|
|
static u32 tegra_fuse_readl(unsigned long offset)
|
|
{
|
|
return readl(NV_PA_FUSE_BASE + offset);
|
|
}
|
|
|
|
static void tegra_fuse_init(void)
|
|
{
|
|
u32 reg;
|
|
|
|
/*
|
|
* Performed by downstream and is not
|
|
* documented by TRM. Whithout setting
|
|
* this bit fuse region will not work.
|
|
*/
|
|
reg = readl_relaxed(NV_PA_CLK_RST_BASE + 0x48);
|
|
reg |= BIT(28);
|
|
writel(reg, NV_PA_CLK_RST_BASE + 0x48);
|
|
|
|
clock_enable(PERIPH_ID_FUSE);
|
|
udelay(2);
|
|
reset_set_enable(PERIPH_ID_FUSE, 0);
|
|
}
|
|
|
|
unsigned long long tegra_chip_uid(void)
|
|
{
|
|
u64 uid = 0ull;
|
|
u32 reg;
|
|
u32 cid;
|
|
u32 vendor;
|
|
u32 fab;
|
|
u32 lot;
|
|
u32 wafer;
|
|
u32 x;
|
|
u32 y;
|
|
u32 i;
|
|
|
|
tegra_fuse_init();
|
|
|
|
/* This used to be so much easier in prior chips. Unfortunately, there
|
|
is no one-stop shopping for the unique id anymore. It must be
|
|
constructed from various bits of information burned into the fuses
|
|
during the manufacturing process. The 64-bit unique id is formed
|
|
by concatenating several bit fields. The notation used for the
|
|
various fields is <fieldname:size_in_bits> with the UID composed
|
|
thusly:
|
|
<CID:4><VENDOR:4><FAB:6><LOT:26><WAFER:6><X:9><Y:9>
|
|
Where:
|
|
Field Bits Position Data
|
|
------- ---- -------- ----------------------------------------
|
|
CID 4 60 Chip id
|
|
VENDOR 4 56 Vendor code
|
|
FAB 6 50 FAB code
|
|
LOT 26 24 Lot code (5-digit base-36-coded-decimal,
|
|
re-encoded to 26 bits binary)
|
|
WAFER 6 18 Wafer id
|
|
X 9 9 Wafer X-coordinate
|
|
Y 9 0 Wafer Y-coordinate
|
|
------- ----
|
|
Total 64
|
|
*/
|
|
|
|
switch (tegra_get_chip()) {
|
|
case CHIPID_TEGRA20:
|
|
/* T20 has simple calculation */
|
|
return ((unsigned long long)tegra_fuse_readl(FUSE_UID_HIGH) << 32ull) |
|
|
(unsigned long long)tegra_fuse_readl(FUSE_UID_LOW);
|
|
case CHIPID_TEGRA30:
|
|
/* T30 chip id is 0 */
|
|
cid = 0;
|
|
break;
|
|
case CHIPID_TEGRA114:
|
|
/* T11x chip id is 1 */
|
|
cid = 1;
|
|
break;
|
|
case CHIPID_TEGRA124:
|
|
/* T12x chip id is 3 */
|
|
cid = 3;
|
|
break;
|
|
case CHIPID_TEGRA210:
|
|
/* T210 chip id is 5 */
|
|
cid = 5;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
vendor = tegra_fuse_readl(FUSE_VENDOR_CODE) & FUSE_VENDOR_CODE_MASK;
|
|
fab = tegra_fuse_readl(FUSE_FAB_CODE) & FUSE_FAB_CODE_MASK;
|
|
|
|
/* Lot code must be re-encoded from a 5 digit base-36 'BCD' number
|
|
to a binary number. */
|
|
lot = 0;
|
|
reg = tegra_fuse_readl(FUSE_LOT_CODE_0) << 2;
|
|
|
|
for (i = 0; i < 5; ++i) {
|
|
u32 digit = (reg & 0xFC000000) >> 26;
|
|
lot *= 36;
|
|
lot += digit;
|
|
reg <<= 6;
|
|
}
|
|
|
|
wafer = tegra_fuse_readl(FUSE_WAFER_ID) & FUSE_WAFER_ID_MASK;
|
|
x = tegra_fuse_readl(FUSE_X_COORDINATE) & FUSE_X_COORDINATE_MASK;
|
|
y = tegra_fuse_readl(FUSE_Y_COORDINATE) & FUSE_Y_COORDINATE_MASK;
|
|
|
|
uid = ((unsigned long long)cid << 60ull)
|
|
| ((unsigned long long)vendor << 56ull)
|
|
| ((unsigned long long)fab << 50ull)
|
|
| ((unsigned long long)lot << 24ull)
|
|
| ((unsigned long long)wafer << 18ull)
|
|
| ((unsigned long long)x << 9ull)
|
|
| ((unsigned long long)y << 0ull);
|
|
|
|
return uid;
|
|
}
|