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soc/intel/quark: Add script time delay support

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Add time delay support to the scripts.

TEST=Build and run on Galileo Gen2

Change-Id: I2c87977e2a2547e00769e59e1ee81fbbb5dff33f
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/14555
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Lee Leahy 2016-04-29 16:36:02 -07:00 committed by Leroy P Leahy
parent 63e3dff02f
commit 4c3f5dc03c
2 changed files with 16 additions and 0 deletions
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6
src/soc/intel/quark/include/soc/reg_access.h
View file

@ -16,6 +16,7 @@
#ifndef _QUARK_REG_ACCESS_H_
#define _QUARK_REG_ACCESS_H_
#include <delay.h>
#include <fsp/util.h>
#include <reg_script.h>
#include <soc/IntelQNCConfig.h>
@ -25,6 +26,7 @@ enum {
USB_PHY_REGS = 1,
SOC_UNIT_REGS,
RMU_TEMP_REGS,
MICROSECOND_DELAY,
};
enum {
@ -78,6 +80,10 @@ enum {
#define REG_SOC_UNIT_XOR(reg_, value_) \
REG_SOC_UNIT_RXW(reg_, 0xffffffff, value_)
/* Time delays */
#define TIME_DELAY_USEC(value_) \
SOC_ACCESS(WRITE, 0, REG_SCRIPT_SIZE_32, 0, value_, 0, MICROSECOND_DELAY)
/* USB register access macros */
#define REG_USB_ACCESS(cmd_, reg_, mask_, value_, timeout_) \
SOC_ACCESS(cmd_, reg_, REG_SCRIPT_SIZE_32, mask_, value_, timeout_, \

10
src/soc/intel/quark/reg_access.c
View file

@ -150,6 +150,16 @@ static void reg_write(struct reg_script_context *ctx)
reg_soc_unit_write(step->reg, (uint32_t)step->value);
break;
case MICROSECOND_DELAY:
/* The actual delay is >= the requested delay */
if (ctx->display_features) {
/* Higher baud-rates will reduce the impact of displaying this message */
printk(BIOS_INFO, "Delay %lld uSec\n", step->value);
ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING;
}
udelay(step->value);
break;
case USB_PHY_REGS:
ctx->display_prefix = "USB PHY";
reg_usb_write(step->reg, (uint32_t)step->value);