diff options
Diffstat (limited to 'chip/g/rbox.c')
| -rw-r--r-- | chip/g/rbox.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/chip/g/rbox.c b/chip/g/rbox.c deleted file mode 100644 index 6aaa0206eb..0000000000 --- a/chip/g/rbox.c +++ /dev/null @@ -1,155 +0,0 @@ -/* Copyright 2016 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "clock.h" -#include "ec_commands.h" -#include "hooks.h" -#include "rdd.h" -#include "registers.h" -#include "system.h" -#include "timer.h" - - -void rbox_clear_wakeup(void) -{ - int i = 0; - - /* Clear the wakeup interrupt */ - GREG32(RBOX, WAKEUP) = GC_RBOX_WAKEUP_CLEAR_MASK; - /* - * Wait until the interrupt status register is cleared, since RBOX runs - * off of RTC instead of the core clock. Wait a max of 50 iterations. - * Experimentally, 15 iterations is usually sufficient. We don't want to - * wait here forever. - */ - while (GREAD(RBOX, WAKEUP_INTR) && i < 50) - i++; -} - -int rbox_powerbtn_is_pressed(void) -{ - return !GREAD_FIELD(RBOX, CHECK_OUTPUT, PWRB_OUT); -} - -/* - * This is 4X as RDD_MAX_WAIT_TIME_COUNTER default value, which should be - * long enough for rdd_is_detected() to represent a stable RDD status - */ -#define RDD_WAIT_TIME (40 * MSEC) - -/* - * Delay EC_RST_L release if RDD cable is connected, or release EC_RST_L - * otherwise. - */ -static void rbox_check_rdd(void) -{ -#ifdef CR50_DEV - print_rdd_state(); -#endif - if (rbox_powerbtn_is_pressed() && rdd_is_detected()) { - power_button_release_enable_interrupt(1); - return; - } - - deassert_ec_rst(); -} -DECLARE_DEFERRED(rbox_check_rdd); - -static void rbox_release_ec_reset(void) -{ - /* Unfreeze the PINMUX */ - GREG32(PINMUX, HOLD) = 0; - - /* - * If the board uses closed loop reset, the short EC_RST_L pulse may - * not actually put the system in reset. Don't release EC_RST_L here. - * Let ap_state.c handle it once it sees the system is reset. - * - * Release PINMUX HOLD, so the board can detect changes on TPM_RST_L. - */ - if (!(system_get_reset_flags() & EC_RESET_FLAG_HIBERNATE) && - board_uses_closed_loop_reset()) { - return; - } - - /* - * After a POR, if the power button is held, then delay releasing - * EC_RST_L. - */ - if ((system_get_reset_flags() & EC_RESET_FLAG_POWER_ON) && - rbox_powerbtn_is_pressed()) { - hook_call_deferred(&rbox_check_rdd_data, RDD_WAIT_TIME); - return; - } - - /* Allow some time for outputs to stabilize. */ - usleep(500); - - /* Let the EC go (the RO bootloader asserts it ASAP after POR) */ - deassert_ec_rst(); -} -DECLARE_HOOK(HOOK_INIT, rbox_release_ec_reset, HOOK_PRIO_LAST); - -static void rbox_init(void) -{ - /* Enable RBOX */ - clock_enable_module(MODULE_RBOX, 1); - - /* Clear any interrupt bits (write 1's to clear) */ - GREG32(RBOX, INT_STATE) = 0xffffffff; - - /* Clear any wakeup bits */ - rbox_clear_wakeup(); - - /* Disable rbox wakeup. It will be reenabled before entering sleep. */ - GREG32(RBOX, WAKEUP) = 0; - - /* Override rbox fuses and setup correct behavior */ - GWRITE(RBOX, DEBUG_CLK10HZ_COUNT, 0x63ff); - GWRITE(RBOX, DEBUG_SHORT_DELAY_COUNT, 0x4ff); - GWRITE(RBOX, DEBUG_LONG_DELAY_COUNT, 0x31); - GWRITE(RBOX, DEBUG_DEBOUNCE, 0x4); - GWRITE(RBOX, DEBUG_KEY_COMBO0, 0xC0); - GWRITE(RBOX, DEBUG_KEY_COMBO1, 0x0); - GWRITE(RBOX, DEBUG_KEY_COMBO2, 0x0); - /* DEBUG_BLOCK_OUTPUT value should be 0x7 */ - GWRITE(RBOX, DEBUG_BLOCK_OUTPUT, - GC_RBOX_DEBUG_BLOCK_OUTPUT_KEY0_SEL_MASK | - GC_RBOX_DEBUG_BLOCK_OUTPUT_KEY1_SEL_MASK | - GC_RBOX_DEBUG_BLOCK_OUTPUT_KEY0_VAL_MASK); - /* DEBUG_POL value should be 0x21 */ - GWRITE(RBOX, DEBUG_POL, - 0x1 << GC_RBOX_DEBUG_POL_AC_PRESENT_LSB | - 0x0 << GC_RBOX_DEBUG_POL_PWRB_IN_LSB | - 0x0 << GC_RBOX_DEBUG_POL_PWRB_OUT_LSB | - 0x0 << GC_RBOX_DEBUG_POL_KEY0_IN_LSB | - 0x0 << GC_RBOX_DEBUG_POL_KEY0_OUT_LSB | - 0x1 << GC_RBOX_DEBUG_POL_KEY1_IN_LSB | - 0x0 << GC_RBOX_DEBUG_POL_KEY1_OUT_LSB | - 0x0 << GC_RBOX_DEBUG_POL_EC_RST_LSB | - 0x0 << GC_RBOX_DEBUG_POL_BATT_DISABLE_LSB); - /* DEBUG_TERM value should be 0x1204 */ - GWRITE(RBOX, DEBUG_TERM, - 0x0 << GC_RBOX_DEBUG_TERM_AC_PRESENT_LSB | - 0x1 << GC_RBOX_DEBUG_TERM_ENTERING_RW_LSB | - 0x0 << GC_RBOX_DEBUG_TERM_PWRB_IN_LSB | - 0x0 << GC_RBOX_DEBUG_TERM_PWRB_OUT_LSB | - 0x2 << GC_RBOX_DEBUG_TERM_KEY0_IN_LSB | - 0x0 << GC_RBOX_DEBUG_TERM_KEY0_OUT_LSB | - 0x1 << GC_RBOX_DEBUG_TERM_KEY1_IN_LSB | - 0x0 << GC_RBOX_DEBUG_TERM_KEY1_OUT_LSB); - /* DEBUG_DRIVE value should be 0x157 */ - GWRITE(RBOX, DEBUG_DRIVE, - 0x3 << GC_RBOX_DEBUG_DRIVE_PWRB_OUT_LSB | - 0x1 << GC_RBOX_DEBUG_DRIVE_KEY0_OUT_LSB | - 0x1 << GC_RBOX_DEBUG_DRIVE_KEY1_OUT_LSB | - 0x1 << GC_RBOX_DEBUG_DRIVE_EC_RST_LSB | - 0x1 << GC_RBOX_DEBUG_DRIVE_BATT_DISABLE_LSB); - /* FUSE_CTRL value should be 0x3 */ - GWRITE(RBOX, FUSE_CTRL, - GC_RBOX_FUSE_CTRL_OVERRIDE_FUSE_MASK | - GC_RBOX_FUSE_CTRL_OVERRIDE_FUSE_READY_MASK); -} -DECLARE_HOOK(HOOK_INIT, rbox_init, HOOK_PRIO_DEFAULT - 1); |