diff options
| -rw-r--r-- | src/soc/nvidia/tegra/apbmisc.c | 29 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra/apbmisc.h | 35 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra124/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra124/bootblock.c | 4 |
4 files changed, 69 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra/apbmisc.c b/src/soc/nvidia/tegra/apbmisc.c new file mode 100644 index 0000000000..fea10b5dbe --- /dev/null +++ b/src/soc/nvidia/tegra/apbmisc.c @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <arch/io.h> +#include <soc/addressmap.h> + +#include "apbmisc.h" + +void enable_jtag(void) +{ + struct apbmisc *misc = (struct apbmisc *)TEGRA_APB_MISC_BASE; + write32(PP_CONFIG_CTL_JTAG, &misc->pp_config_ctl); +} diff --git a/src/soc/nvidia/tegra/apbmisc.h b/src/soc/nvidia/tegra/apbmisc.h new file mode 100644 index 0000000000..805d0bf18b --- /dev/null +++ b/src/soc/nvidia/tegra/apbmisc.h @@ -0,0 +1,35 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __SOC_NVIDIA_TEGRA_APBMISC_H__ +#define __SOC_NVIDIA_TEGRA_APBMISC_H__ + +#include <stdint.h> + +struct apbmisc { + u32 reserved0[9]; /* ABP_MISC_PP_ offsets 00-20 */ + u32 pp_config_ctl; /* _CONFIG_CTL_0, offset 24 */ +}; + +#define PP_CONFIG_CTL_TBE (1 << 7) +#define PP_CONFIG_CTL_JTAG (1 << 6) + +void enable_jtag(void); + +#endif /* __SOC_NVIDIA_TEGRA_APBMISC_H__ */ diff --git a/src/soc/nvidia/tegra124/Makefile.inc b/src/soc/nvidia/tegra124/Makefile.inc index 4ba23429f2..07184f88b0 100644 --- a/src/soc/nvidia/tegra124/Makefile.inc +++ b/src/soc/nvidia/tegra124/Makefile.inc @@ -13,6 +13,7 @@ bootblock-y += ../tegra/gpio.c bootblock-y += ../tegra/i2c.c bootblock-y += ../tegra/pingroup.c bootblock-y += ../tegra/pinmux.c +bootblock-y += ../tegra/apbmisc.c bootblock-y += timer.c ifeq ($(CONFIG_BOOTBLOCK_CONSOLE),y) bootblock-$(CONFIG_CONSOLE_SERIAL) += uart.c diff --git a/src/soc/nvidia/tegra124/bootblock.c b/src/soc/nvidia/tegra124/bootblock.c index 0e10a2b227..22024af90b 100644 --- a/src/soc/nvidia/tegra124/bootblock.c +++ b/src/soc/nvidia/tegra124/bootblock.c @@ -23,6 +23,7 @@ #include <cbfs.h> #include <console/console.h> #include <soc/clock.h> +#include <soc/nvidia/tegra/apbmisc.h> #include "pinmux.h" #include "power.h" @@ -31,6 +32,9 @@ void main(void) { void *entry; + // enable JTAG at the earliest stage + enable_jtag(); + clock_early_uart(); // Serial out, tristate off. |