From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001 From: Angelos Mouzakitis Date: Tue, 10 Oct 2023 14:33:42 +0000 Subject: Add submodule dependency files Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec --- roms/u-boot/drivers/bootcount/bootcount_i2c.c | 43 +++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 roms/u-boot/drivers/bootcount/bootcount_i2c.c (limited to 'roms/u-boot/drivers/bootcount/bootcount_i2c.c') diff --git a/roms/u-boot/drivers/bootcount/bootcount_i2c.c b/roms/u-boot/drivers/bootcount/bootcount_i2c.c new file mode 100644 index 000000000..496741d63 --- /dev/null +++ b/roms/u-boot/drivers/bootcount/bootcount_i2c.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2013 + * Heiko Schocher, DENX Software Engineering, hs@denx.de. + */ + +#include +#include +#include + +#define BC_MAGIC 0xbc + +void bootcount_store(ulong a) +{ + unsigned char buf[3]; + int ret; + + buf[0] = BC_MAGIC; + buf[1] = (a & 0xff); + ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, CONFIG_SYS_BOOTCOUNT_ADDR, + CONFIG_BOOTCOUNT_ALEN, buf, 2); + if (ret != 0) + puts("Error writing bootcount\n"); +} + +ulong bootcount_load(void) +{ + unsigned char buf[3]; + int ret; + + ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, CONFIG_SYS_BOOTCOUNT_ADDR, + CONFIG_BOOTCOUNT_ALEN, buf, 2); + if (ret != 0) { + puts("Error loading bootcount\n"); + return 0; + } + if (buf[0] == BC_MAGIC) + return buf[1]; + + bootcount_store(0); + + return 0; +} -- cgit