2019-05-29 14:18:09 +00:00
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// SPDX-License-Identifier: GPL-2.0-only
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2015-09-30 12:56:44 +00:00
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/*
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* Rockchip eFuse Driver
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*
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* Copyright (c) 2015 Rockchip Electronics Co. Ltd.
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* Author: Caesar Wang <wxt@rock-chips.com>
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*/
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2015-12-14 09:43:39 +00:00
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#include <linux/clk.h>
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#include <linux/delay.h>
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2015-09-30 12:56:44 +00:00
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/module.h>
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2015-12-14 09:43:39 +00:00
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#include <linux/nvmem-provider.h>
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#include <linux/slab.h>
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2015-09-30 12:56:44 +00:00
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#include <linux/of.h>
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2016-09-02 09:14:27 +00:00
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#include <linux/of_platform.h>
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2015-12-14 09:43:39 +00:00
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#include <linux/platform_device.h>
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2015-09-30 12:56:44 +00:00
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2016-09-02 09:14:27 +00:00
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#define RK3288_A_SHIFT 6
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#define RK3288_A_MASK 0x3ff
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#define RK3288_PGENB BIT(3)
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#define RK3288_LOAD BIT(2)
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#define RK3288_STROBE BIT(1)
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#define RK3288_CSB BIT(0)
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2017-12-15 14:06:09 +00:00
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#define RK3328_SECURE_SIZES 96
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#define RK3328_INT_STATUS 0x0018
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#define RK3328_DOUT 0x0020
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#define RK3328_AUTO_CTRL 0x0024
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#define RK3328_INT_FINISH BIT(0)
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#define RK3328_AUTO_ENB BIT(0)
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#define RK3328_AUTO_RD BIT(1)
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2016-09-02 09:14:27 +00:00
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#define RK3399_A_SHIFT 16
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#define RK3399_A_MASK 0x3ff
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#define RK3399_NBYTES 4
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#define RK3399_STROBSFTSEL BIT(9)
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#define RK3399_RSB BIT(7)
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#define RK3399_PD BIT(5)
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#define RK3399_PGENB BIT(3)
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#define RK3399_LOAD BIT(2)
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#define RK3399_STROBE BIT(1)
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#define RK3399_CSB BIT(0)
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#define REG_EFUSE_CTRL 0x0000
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#define REG_EFUSE_DOUT 0x0004
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2015-09-30 12:56:44 +00:00
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2015-12-14 09:43:39 +00:00
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struct rockchip_efuse_chip {
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2015-09-30 12:56:44 +00:00
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struct device *dev;
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void __iomem *base;
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2015-12-14 09:43:39 +00:00
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struct clk *clk;
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2015-09-30 12:56:44 +00:00
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};
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2016-09-02 09:14:27 +00:00
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static int rockchip_rk3288_efuse_read(void *context, unsigned int offset,
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void *val, size_t bytes)
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2015-09-30 12:56:44 +00:00
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{
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2015-12-14 09:43:39 +00:00
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struct rockchip_efuse_chip *efuse = context;
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2015-09-30 12:56:44 +00:00
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u8 *buf = val;
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int ret;
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2015-12-14 09:43:39 +00:00
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ret = clk_prepare_enable(efuse->clk);
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2015-09-30 12:56:44 +00:00
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if (ret < 0) {
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2015-12-14 09:43:39 +00:00
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dev_err(efuse->dev, "failed to prepare/enable efuse clk\n");
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2015-09-30 12:56:44 +00:00
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return ret;
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}
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2016-09-02 09:14:27 +00:00
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writel(RK3288_LOAD | RK3288_PGENB, efuse->base + REG_EFUSE_CTRL);
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2015-09-30 12:56:44 +00:00
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udelay(1);
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2016-04-24 19:28:11 +00:00
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while (bytes--) {
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2015-12-14 09:43:39 +00:00
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writel(readl(efuse->base + REG_EFUSE_CTRL) &
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2016-09-02 09:14:27 +00:00
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(~(RK3288_A_MASK << RK3288_A_SHIFT)),
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2015-12-14 09:43:39 +00:00
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efuse->base + REG_EFUSE_CTRL);
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writel(readl(efuse->base + REG_EFUSE_CTRL) |
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2016-09-02 09:14:27 +00:00
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((offset++ & RK3288_A_MASK) << RK3288_A_SHIFT),
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2015-12-14 09:43:39 +00:00
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efuse->base + REG_EFUSE_CTRL);
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2015-09-30 12:56:44 +00:00
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udelay(1);
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2015-12-14 09:43:39 +00:00
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writel(readl(efuse->base + REG_EFUSE_CTRL) |
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2016-09-02 09:14:27 +00:00
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RK3288_STROBE, efuse->base + REG_EFUSE_CTRL);
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2015-09-30 12:56:44 +00:00
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udelay(1);
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2015-12-14 09:43:39 +00:00
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*buf++ = readb(efuse->base + REG_EFUSE_DOUT);
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writel(readl(efuse->base + REG_EFUSE_CTRL) &
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2016-09-02 09:14:27 +00:00
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(~RK3288_STROBE), efuse->base + REG_EFUSE_CTRL);
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udelay(1);
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}
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/* Switch to standby mode */
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writel(RK3288_PGENB | RK3288_CSB, efuse->base + REG_EFUSE_CTRL);
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clk_disable_unprepare(efuse->clk);
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return 0;
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}
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2017-12-15 14:06:09 +00:00
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static int rockchip_rk3328_efuse_read(void *context, unsigned int offset,
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void *val, size_t bytes)
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{
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struct rockchip_efuse_chip *efuse = context;
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unsigned int addr_start, addr_end, addr_offset, addr_len;
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u32 out_value, status;
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u8 *buf;
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int ret, i = 0;
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ret = clk_prepare_enable(efuse->clk);
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if (ret < 0) {
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dev_err(efuse->dev, "failed to prepare/enable efuse clk\n");
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return ret;
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}
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/* 128 Byte efuse, 96 Byte for secure, 32 Byte for non-secure */
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offset += RK3328_SECURE_SIZES;
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addr_start = rounddown(offset, RK3399_NBYTES) / RK3399_NBYTES;
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addr_end = roundup(offset + bytes, RK3399_NBYTES) / RK3399_NBYTES;
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addr_offset = offset % RK3399_NBYTES;
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addr_len = addr_end - addr_start;
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treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
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kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
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kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
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kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
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kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
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kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
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- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
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- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
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- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
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- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
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kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
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kzalloc(sizeof(TYPE) * C2, ...)
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kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 21:03:40 +00:00
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buf = kzalloc(array3_size(addr_len, RK3399_NBYTES, sizeof(*buf)),
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GFP_KERNEL);
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2017-12-15 14:06:09 +00:00
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if (!buf) {
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ret = -ENOMEM;
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goto nomem;
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}
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while (addr_len--) {
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writel(RK3328_AUTO_RD | RK3328_AUTO_ENB |
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((addr_start++ & RK3399_A_MASK) << RK3399_A_SHIFT),
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efuse->base + RK3328_AUTO_CTRL);
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udelay(4);
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status = readl(efuse->base + RK3328_INT_STATUS);
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if (!(status & RK3328_INT_FINISH)) {
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ret = -EIO;
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goto err;
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}
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out_value = readl(efuse->base + RK3328_DOUT);
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writel(RK3328_INT_FINISH, efuse->base + RK3328_INT_STATUS);
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memcpy(&buf[i], &out_value, RK3399_NBYTES);
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i += RK3399_NBYTES;
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}
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memcpy(val, buf + addr_offset, bytes);
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err:
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kfree(buf);
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nomem:
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clk_disable_unprepare(efuse->clk);
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return ret;
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}
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|
|
|
2016-09-02 09:14:27 +00:00
|
|
|
static int rockchip_rk3399_efuse_read(void *context, unsigned int offset,
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|
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void *val, size_t bytes)
|
|
|
|
{
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struct rockchip_efuse_chip *efuse = context;
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unsigned int addr_start, addr_end, addr_offset, addr_len;
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u32 out_value;
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u8 *buf;
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int ret, i = 0;
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ret = clk_prepare_enable(efuse->clk);
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if (ret < 0) {
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dev_err(efuse->dev, "failed to prepare/enable efuse clk\n");
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return ret;
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}
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addr_start = rounddown(offset, RK3399_NBYTES) / RK3399_NBYTES;
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addr_end = roundup(offset + bytes, RK3399_NBYTES) / RK3399_NBYTES;
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addr_offset = offset % RK3399_NBYTES;
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addr_len = addr_end - addr_start;
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|
|
|
|
treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 21:03:40 +00:00
|
|
|
buf = kzalloc(array3_size(addr_len, RK3399_NBYTES, sizeof(*buf)),
|
|
|
|
GFP_KERNEL);
|
2016-09-02 09:14:27 +00:00
|
|
|
if (!buf) {
|
|
|
|
clk_disable_unprepare(efuse->clk);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
writel(RK3399_LOAD | RK3399_PGENB | RK3399_STROBSFTSEL | RK3399_RSB,
|
|
|
|
efuse->base + REG_EFUSE_CTRL);
|
|
|
|
udelay(1);
|
|
|
|
while (addr_len--) {
|
|
|
|
writel(readl(efuse->base + REG_EFUSE_CTRL) | RK3399_STROBE |
|
|
|
|
((addr_start++ & RK3399_A_MASK) << RK3399_A_SHIFT),
|
|
|
|
efuse->base + REG_EFUSE_CTRL);
|
2015-09-30 12:56:44 +00:00
|
|
|
udelay(1);
|
2016-09-02 09:14:27 +00:00
|
|
|
out_value = readl(efuse->base + REG_EFUSE_DOUT);
|
|
|
|
writel(readl(efuse->base + REG_EFUSE_CTRL) & (~RK3399_STROBE),
|
|
|
|
efuse->base + REG_EFUSE_CTRL);
|
|
|
|
udelay(1);
|
|
|
|
|
|
|
|
memcpy(&buf[i], &out_value, RK3399_NBYTES);
|
|
|
|
i += RK3399_NBYTES;
|
2015-09-30 12:56:44 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Switch to standby mode */
|
2016-09-02 09:14:27 +00:00
|
|
|
writel(RK3399_PD | RK3399_CSB, efuse->base + REG_EFUSE_CTRL);
|
|
|
|
|
|
|
|
memcpy(val, buf + addr_offset, bytes);
|
|
|
|
|
|
|
|
kfree(buf);
|
2015-09-30 12:56:44 +00:00
|
|
|
|
2015-12-14 09:43:39 +00:00
|
|
|
clk_disable_unprepare(efuse->clk);
|
2015-09-30 12:56:44 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct nvmem_config econfig = {
|
|
|
|
.name = "rockchip-efuse",
|
2016-04-24 19:28:11 +00:00
|
|
|
.stride = 1,
|
|
|
|
.word_size = 1,
|
2015-09-30 12:56:44 +00:00
|
|
|
.read_only = true,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct of_device_id rockchip_efuse_match[] = {
|
2016-09-02 09:14:27 +00:00
|
|
|
/* deprecated but kept around for dts binding compatibility */
|
|
|
|
{
|
|
|
|
.compatible = "rockchip,rockchip-efuse",
|
|
|
|
.data = (void *)&rockchip_rk3288_efuse_read,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.compatible = "rockchip,rk3066a-efuse",
|
|
|
|
.data = (void *)&rockchip_rk3288_efuse_read,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.compatible = "rockchip,rk3188-efuse",
|
|
|
|
.data = (void *)&rockchip_rk3288_efuse_read,
|
|
|
|
},
|
2017-06-09 09:59:10 +00:00
|
|
|
{
|
2017-07-14 08:38:43 +00:00
|
|
|
.compatible = "rockchip,rk3228-efuse",
|
2017-06-09 09:59:10 +00:00
|
|
|
.data = (void *)&rockchip_rk3288_efuse_read,
|
|
|
|
},
|
2016-09-02 09:14:27 +00:00
|
|
|
{
|
|
|
|
.compatible = "rockchip,rk3288-efuse",
|
|
|
|
.data = (void *)&rockchip_rk3288_efuse_read,
|
|
|
|
},
|
2017-10-09 13:26:38 +00:00
|
|
|
{
|
|
|
|
.compatible = "rockchip,rk3368-efuse",
|
|
|
|
.data = (void *)&rockchip_rk3288_efuse_read,
|
|
|
|
},
|
2017-12-15 14:06:09 +00:00
|
|
|
{
|
|
|
|
.compatible = "rockchip,rk3328-efuse",
|
|
|
|
.data = (void *)&rockchip_rk3328_efuse_read,
|
|
|
|
},
|
2016-09-02 09:14:27 +00:00
|
|
|
{
|
|
|
|
.compatible = "rockchip,rk3399-efuse",
|
|
|
|
.data = (void *)&rockchip_rk3399_efuse_read,
|
|
|
|
},
|
2015-09-30 12:56:44 +00:00
|
|
|
{ /* sentinel */},
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, rockchip_efuse_match);
|
|
|
|
|
2015-09-30 13:46:06 +00:00
|
|
|
static int rockchip_efuse_probe(struct platform_device *pdev)
|
2015-09-30 12:56:44 +00:00
|
|
|
{
|
|
|
|
struct resource *res;
|
|
|
|
struct nvmem_device *nvmem;
|
2015-12-14 09:43:39 +00:00
|
|
|
struct rockchip_efuse_chip *efuse;
|
2018-03-09 14:47:11 +00:00
|
|
|
const void *data;
|
2016-09-02 09:14:27 +00:00
|
|
|
struct device *dev = &pdev->dev;
|
|
|
|
|
2018-03-09 14:47:11 +00:00
|
|
|
data = of_device_get_match_data(dev);
|
|
|
|
if (!data) {
|
2016-09-02 09:14:27 +00:00
|
|
|
dev_err(dev, "failed to get match data\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2015-09-30 12:56:44 +00:00
|
|
|
|
2018-03-09 14:47:13 +00:00
|
|
|
efuse = devm_kzalloc(dev, sizeof(struct rockchip_efuse_chip),
|
2015-12-14 09:43:39 +00:00
|
|
|
GFP_KERNEL);
|
|
|
|
if (!efuse)
|
|
|
|
return -ENOMEM;
|
2015-09-30 12:56:44 +00:00
|
|
|
|
2015-12-14 09:43:39 +00:00
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
2018-03-09 14:47:13 +00:00
|
|
|
efuse->base = devm_ioremap_resource(dev, res);
|
2015-12-14 09:43:39 +00:00
|
|
|
if (IS_ERR(efuse->base))
|
|
|
|
return PTR_ERR(efuse->base);
|
2015-09-30 12:56:44 +00:00
|
|
|
|
2018-03-09 14:47:13 +00:00
|
|
|
efuse->clk = devm_clk_get(dev, "pclk_efuse");
|
2015-12-14 09:43:39 +00:00
|
|
|
if (IS_ERR(efuse->clk))
|
|
|
|
return PTR_ERR(efuse->clk);
|
2015-09-30 12:56:44 +00:00
|
|
|
|
2018-03-09 14:47:13 +00:00
|
|
|
efuse->dev = dev;
|
2017-12-15 14:06:08 +00:00
|
|
|
if (of_property_read_u32(dev->of_node, "rockchip,efuse-size",
|
|
|
|
&econfig.size))
|
|
|
|
econfig.size = resource_size(res);
|
2018-03-09 14:47:11 +00:00
|
|
|
econfig.reg_read = data;
|
2016-04-24 19:28:11 +00:00
|
|
|
econfig.priv = efuse;
|
2015-12-14 09:43:39 +00:00
|
|
|
econfig.dev = efuse->dev;
|
2018-03-09 14:47:02 +00:00
|
|
|
nvmem = devm_nvmem_register(dev, &econfig);
|
2015-09-30 12:56:44 +00:00
|
|
|
|
2018-03-09 14:47:02 +00:00
|
|
|
return PTR_ERR_OR_ZERO(nvmem);
|
2015-09-30 12:56:44 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver rockchip_efuse_driver = {
|
|
|
|
.probe = rockchip_efuse_probe,
|
|
|
|
.driver = {
|
|
|
|
.name = "rockchip-efuse",
|
|
|
|
.of_match_table = rockchip_efuse_match,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
module_platform_driver(rockchip_efuse_driver);
|
|
|
|
MODULE_DESCRIPTION("rockchip_efuse driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|