Slippy: Changes needed to boot EC without bricking.

This commits the hacks made during board bringup. Bugs can be filed and
fixed based on this starting point.

BUG=chrome-os-partner:18825
BRANCH=slippy
TEST=manual

Try it and see.

Change-Id: Ia663eaf9a357633873b1b5d5cc6dbdda63513082
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/50875
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

chip/lm4/clock.c

@@ -27,6 +27,7 @@ static int freq;
  */
 static void disable_pll(void)
 {
+#ifndef BOARD_slippy			       /* FIXME: crosbug.com/p/19366 */
 	/* Switch to 16MHz internal oscillator and power down the PLL */
 	LM4_SYSTEM_RCC = LM4_SYSTEM_RCC_SYSDIV(0) |
 		LM4_SYSTEM_RCC_BYPASS |
@@ -34,6 +35,7 @@ static void disable_pll(void)
 		LM4_SYSTEM_RCC_OSCSRC(1) |
 		LM4_SYSTEM_RCC_MOSCDIS;
 	LM4_SYSTEM_RCC2 &= ~LM4_SYSTEM_RCC2_USERCC2;
+#endif
 
 	freq = INTERNAL_CLOCK;
 }
@@ -46,6 +48,7 @@ static void enable_pll(void)
 	/* Disable the PLL so we can reconfigure it */
 	disable_pll();
 
+#ifndef BOARD_slippy			       /* FIXME: crosbug.com/p/19366 */
 	/*
 	 * Enable the PLL (PWRDN is no longer set) and set divider.  PLL is
 	 * still bypassed, since it hasn't locked yet.
@@ -63,7 +66,7 @@ static void enable_pll(void)
 
 	/* Remove bypass on PLL */
 	LM4_SYSTEM_RCC &= ~LM4_SYSTEM_RCC_BYPASS;
-
+#endif
 	freq = PLL_CLOCK;
 }
 
@@ -93,6 +96,7 @@ int clock_get_freq(void)
 void clock_init(void)
 {
 
+#ifndef BOARD_slippy			       /* FIXME: crosbug.com/p/19366 */
 #ifdef BOARD_bds
 	/*
 	 * Perform an auto calibration of the internal oscillator using the
@@ -115,6 +119,7 @@ void clock_init(void)
 	 * can disable main oscillator control to reduce power consumption.
 	 */
 	LM4_SYSTEM_MOSCCTL = 0x04;
+#endif
 #endif
 
 	/*

chip/lm4/flash.c

@@ -163,6 +163,10 @@ static int write_buffer(void)
 {
 	int t;
 
+#ifdef BOARD_slippy			       /* FIXME: crosbug.com/p/19366 */
+	return EC_ERROR_UNKNOWN;
+#endif
+
 	if (all_protected)
 		return EC_ERROR_ACCESS_DENIED;
 
@@ -235,6 +239,9 @@ int flash_physical_write(int offset, int size, const char *data)
 
 int flash_physical_erase(int offset, int size)
 {
+#ifdef BOARD_slippy			       /* FIXME: crosbug.com/p/19366 */
+	return EC_ERROR_UNKNOWN;
+#endif
 	if (all_protected)
 		return EC_ERROR_ACCESS_DENIED;
 

chip/lm4/openocd/lm4x_cmds.tcl

@@ -31,6 +31,10 @@ proc flash_bds { } {
 	flash_lm4 ../../../build/bds/ec.bin 0
 }
 
+proc flash_slippy { } {
+	flash_lm4 ../../../build/slippy/ec.bin 0
+}
+
 proc unprotect_link { } {
 	reset halt
 	flash erase_sector 0 254 255

chip/lm4/openocd/servo_v2_slower.cfg

@@ -6,7 +6,8 @@ gdb_flash_program enable
 interface ft2232
 ft2232_layout jtagkey
 ft2232_vid_pid 0x18d1 0x5002
-jtag_khz 600
+adapter_khz 600
+#jtag_khz 600
 #jtag_khz 0
 #jtag_rclk 6000
 source [find lm4x.cfg]

chip/lm4/system.c

@@ -295,6 +295,7 @@ void system_hibernate(uint32_t seconds, uint32_t microseconds)
 
 void system_pre_init(void)
 {
+#ifndef BOARD_slippy			       /* FIXME: crosbug.com/p/19366 */
 	volatile uint32_t scratch  __attribute__((unused));
 
 	/* Enable clocks to the hibernation module */
@@ -338,11 +339,13 @@ void system_pre_init(void)
 	LM4_HIBERNATE_HIBRTCT = 0x7fff;
 	wait_for_hibctl_wc();
 	LM4_HIBERNATE_HIBIM = 0;
+#endif
 
 	check_reset_cause();
 
 	/* HEY: read LM4_SYSTEM_BOOTCFG bit 4 to determine WRKEY value */
 
+#ifndef BOARD_slippy			     /* FIXME: crosbug.com/p/19366 */
 	/* Initialize bootcfg if needed */
 	if (LM4_SYSTEM_BOOTCFG != BOOTCFG_VALUE) {
 		LM4_FLASH_FMD = BOOTCFG_VALUE;
@@ -351,6 +354,7 @@ void system_pre_init(void)
 		while (LM4_FLASH_FMC & 0x08)
 			;
 	}
+#endif
 
 	/* Brown-outs should trigger a reset */
 	LM4_SYSTEM_PBORCTL |= 0x02;

common/x86_power_haswell.c

@@ -13,6 +13,7 @@
 #include "hooks.h"
 #include "host_command.h"
 #include "lid_switch.h"
+#include "power_button.h"
 #include "switch.h"
 #include "system.h"
 #include "task.h"
@@ -89,7 +90,7 @@ void chipset_exit_hard_off(void)
 
 void chipset_throttle_cpu(int throttle)
 {
-	CPRINTF("[%T %s(%d)]\n", __func__, throttle);
+	/* FIXME CPRINTF("[%T %s(%d)]\n", __func__, throttle);*/
 }
 
 /*****************************************************************************/
@@ -151,8 +152,44 @@ void chipset_task(void)
 {
 	while (1) {
 		CPRINTF("[%T %s()]\n", __func__);
-		/* do NOTHING until we know what we should do. */
-		task_wait_event(-1);
+
+		/* for wait power button */
+		while (gpio_get_level(GPIO_POWER_BUTTON_L) == 1)
+			usleep(200000);
+
+		CPRINTF("[%T %s() PWRBTN is pressed.]\n", __func__);
+
+		gpio_set_level(GPIO_PP5000_EN, 1);
+		usleep(200000);
+
+		gpio_set_level(GPIO_PCH_DPWROK, 1);
+		usleep(200000);
+
+		gpio_set_level(GPIO_SUSP_VR_EN, 1);
+		usleep(200000);
+
+		gpio_set_level(GPIO_PCH_RSMRST_L, 1);
+		usleep(200000);
+
+		gpio_set_level(GPIO_PCH_PWRBTN_L, 0);
+		usleep(200000);
+
+		gpio_set_level(GPIO_PCH_PWRBTN_L, 1);
+		usleep(200000);
+
+		gpio_set_level(GPIO_PP1350_EN, 1);
+		usleep(200000);
+
+		gpio_set_level(GPIO_PCH_PWROK, 1);
+		usleep(200000);
+
+		gpio_set_level(GPIO_SYS_PWROK, 1);
+		usleep(200000);
+
+		CPRINTF("[%T %s() boot seq done.]\n", __func__);
+
+		while (1)
+			task_wait_event(-1);
 	}
 }
 

util/flash_ec

@@ -202,7 +202,7 @@ save="$(servo_save)"
 
 case "${BOARD}" in
 	daisy | snow | spring | pit ) flash_daisy ;;
-	link ) flash_link ;;
+	link | slippy ) flash_link ;;
 	*) die "board ${BOARD} not supported" ;;
 esac