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4809c70bbe
This adds the CCD configuration module, and the console commands to control it. It is not wired up to any of the CCD capabilities; that's coming in the next CL. Briefly: * CCD configuration is persistently stored in nvmem_vars. Use ccdinfo to print it. * CCD can be Locked, Unlocked (some capabilities), or Opened (all capabilities), using the ccdlock / ccdunlock / ccdopen commands. * CCD config can be restricted by setting a password via ccdpass. * Individual config capabilities can be set via ccdset. Some of those will be used to gate access to things like write protect and UARTs. Others affect the requirements for ccdunlock / ccdopen (for example, is physical presenc required). * The entire config can be reset via ccdreset. If only unlocked, config that is restricted to Opened is not reset. * If CR50_DEV=1, ccdoops will force-reset and open the config. See go/cr50-ccd-wp for more information. BUG=b:62537474 BRANCH=none TEST=manual with CR50_DEV=1 build gpioget # make sure GPIO_BATT_PRES_L=0 ccdlock # lock, because CR50_DEV=1 builds start unlocked ccdinfo # locked, flags=0, all capabilities default ccdpass # access denied (we're locked) ccdreset # access denied ccdset flashap always # access denied ccdunlock ccdinfo # unlocked ccdpass foo ccdinfo # flags=2 (password set when unlocked) ccdset flashap always # access denied ccdset uartectx unlesslocked ccdinfo # yes, uartectx permission changed ccdlock ccdunlock # fails without password ccdunlock bar # wrong password ccdunlock foo # busy (wait 3 sec) ccdunlock foo ccdreset ccdinfo # no password, flags 0, capabilities all default ccdopen # requires physical presence; tap power or use 'pp' ccdset uartectx unlesslocked ccdset batterybypasspp ifopened ccdpass baz ccdinfo # password set, flag 0, ccdset changes worked ccdunlock ccdreset ccdinfo # uartectx back to ifopened, password still set ccdopen baz # still requires physical presence ccdset opennolongpp always ccdlock ccdopen baz # no pp required ccdset unlocknoshortpp unlesslocked ccdlock ccdopen baz # short pp sequence required (3 taps) ccdlock ccdunlock baz # short pp sequence required ccdopen baz # pp not required ccdset unlocknoshortpp always ccdlock testlab open # access denied testlab enable # access denied ccdunlock baz testlab open # access denied testlab enable # access denied ccdopen baz testlab enable # requires short pp ccdinfo # flags 1 ccdreset ccdinfo # no password, flags=1, caps all default ccdlock testlab open ccdinfo # opened testlab disable # requires short pp; let it time out ccdinfo # still opened, flags=1 ccdlock ccdoops # backdoor in CR50_DEV images to force-reset CCD ccdinfo # opened, flags=0, all defaults (yes, oops wipes out testlab) ccdreset rma ccdinfo # flags = 0x400000, everything but Cr50FullConsole always ccdreset # back to flags=0, all default Change-Id: I24e8d8f361874671e6e94f27492ae00db919bea9 Reviewed-on: https://chromium-review.googlesource.com/569439 Commit-Ready: Randall Spangler <rspangler@chromium.org> Tested-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Symbols from linker definitions
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*/
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#ifndef __CROS_EC_LINK_DEFS_H
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#define __CROS_EC_LINK_DEFS_H
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#include "console.h"
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#include "hooks.h"
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#include "host_command.h"
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#include "mkbp_event.h"
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#include "task.h"
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#include "test_util.h"
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/* Console commands */
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extern const struct console_command __cmds[];
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extern const struct console_command __cmds_end[];
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/* Extension commands. */
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extern const void *__extension_cmds;
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extern const void *__extension_cmds_end;
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/* Hooks */
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extern const struct hook_data __hooks_init[];
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extern const struct hook_data __hooks_init_end[];
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extern const struct hook_data __hooks_pre_freq_change[];
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extern const struct hook_data __hooks_pre_freq_change_end[];
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extern const struct hook_data __hooks_freq_change[];
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extern const struct hook_data __hooks_freq_change_end[];
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extern const struct hook_data __hooks_sysjump[];
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extern const struct hook_data __hooks_sysjump_end[];
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extern const struct hook_data __hooks_chipset_pre_init[];
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extern const struct hook_data __hooks_chipset_pre_init_end[];
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extern const struct hook_data __hooks_chipset_startup[];
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extern const struct hook_data __hooks_chipset_startup_end[];
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extern const struct hook_data __hooks_chipset_resume[];
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extern const struct hook_data __hooks_chipset_resume_end[];
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extern const struct hook_data __hooks_chipset_suspend[];
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extern const struct hook_data __hooks_chipset_suspend_end[];
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extern const struct hook_data __hooks_chipset_shutdown[];
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extern const struct hook_data __hooks_chipset_shutdown_end[];
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extern const struct hook_data __hooks_chipset_reset[];
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extern const struct hook_data __hooks_chipset_reset_end[];
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extern const struct hook_data __hooks_ac_change[];
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extern const struct hook_data __hooks_ac_change_end[];
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extern const struct hook_data __hooks_lid_change[];
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extern const struct hook_data __hooks_lid_change_end[];
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extern const struct hook_data __hooks_tablet_mode_change[];
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extern const struct hook_data __hooks_tablet_mode_change_end[];
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extern const struct hook_data __hooks_pwrbtn_change[];
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extern const struct hook_data __hooks_pwrbtn_change_end[];
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extern const struct hook_data __hooks_battery_soc_change[];
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extern const struct hook_data __hooks_battery_soc_change_end[];
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#ifdef CONFIG_CASE_CLOSED_DEBUG
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extern const struct hook_data __hooks_ccd_change[];
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extern const struct hook_data __hooks_ccd_change_end[];
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#endif
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extern const struct hook_data __hooks_tick[];
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extern const struct hook_data __hooks_tick_end[];
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extern const struct hook_data __hooks_second[];
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extern const struct hook_data __hooks_second_end[];
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/* Deferrable functions and firing times*/
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extern const struct deferred_data __deferred_funcs[];
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extern const struct deferred_data __deferred_funcs_end[];
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extern uint64_t __deferred_until[];
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extern uint64_t __deferred_until_end[];
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/* I2C fake devices for unit testing */
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extern const struct test_i2c_xfer __test_i2c_xfer[];
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extern const struct test_i2c_xfer __test_i2c_xfer_end[];
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/* Host commands */
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extern const struct host_command __hcmds[];
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extern const struct host_command __hcmds_end[];
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/* MKBP events */
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extern const struct mkbp_event_source __mkbp_evt_srcs[];
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extern const struct mkbp_event_source __mkbp_evt_srcs_end[];
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/* IRQs (interrupt handlers) */
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extern const struct irq_priority __irqprio[];
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extern const struct irq_priority __irqprio_end[];
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extern const void *__irqhandler[];
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/* Shared memory buffer. Use via shared_mem.h interface. */
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extern uint8_t __shared_mem_buf[];
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/* Image sections used by the TPM2 library */
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extern uint8_t *__bss_libtpm2_start;
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extern uint8_t *__bss_libtpm2_end;
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extern uint8_t *__data_libtpm2_start;
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extern uint8_t *__data_libtpm2_end;
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/* Image sections. */
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extern const void *__ro_end;
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extern const void *__data_start;
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extern const void *__data_end;
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#endif /* __CROS_EC_LINK_DEFS_H */
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