libpayload: Replace majority of timer drivers with a generic one

Currently every non-x86 platform supported by libpayload needs to
provide its own timer driver. Most of the ones we have accumulated there
look almost identical: For the frequency, return a preset constant. For
the value, read a 32-bit register, possibly read another 32-bit register
and shift+OR it with the previous one, then return that.

Let's replace this with a single .c file that can easily handle all of
those cases. Menuconfig convenience can still be maintained by providing
several presets that select different defaults for the driver's
configuration options (register address(es) and frequency).

Removes an "enabled" check from Samsung MCT driver since coreboot always
unconditionally enables that timer anyway.

CQ-DEPEND=CL:344809
BRANCH=None
BUG=None
TEST=Booted Oak and Veyron, observed how dev-mode delay was still ~30s

Change-Id: I61cb7d2ffd4902aa841c57f9afa9cd991f770acd
Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Id: a036af6
Original-Change-Id: I9784e7c6aa5abd6d92478ea7ec1cf42c9a437546
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/347749
Reviewed-on: https://review.coreboot.org/17023
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

1 files changed, 0 insertions, 115 deletions

diff --git a/payloads/libpayload/drivers/timer/mct.c b/payloads/libpayload/drivers/timer/mct.c
deleted file mode 100644
index 992643d774..0000000000
--- a/payloads/libpayload/drivers/timer/mct.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright 2013 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <arch/io.h>
-#include <libpayload.h>
-#include <libpayload-config.h>
-#include <stdint.h>
-
-#include "config.h"
-
-struct __attribute__((packed)) mct_regs
-{
-	uint32_t mct_cfg;
-	uint8_t reserved0[0xfc];
-	uint32_t g_cnt_l;
-	uint32_t g_cnt_u;
-	uint8_t reserved1[0x8];
-	uint32_t g_cnt_wstat;
-	uint8_t reserved2[0xec];
-	uint32_t g_comp0_l;
-	uint32_t g_comp0_u;
-	uint32_t g_comp0_addr_incr;
-	uint8_t reserved3[0x4];
-	uint32_t g_comp1_l;
-	uint32_t g_comp1_u;
-	uint32_t g_comp1_addr_incr;
-	uint8_t reserved4[0x4];
-	uint32_t g_comp2_l;
-	uint32_t g_comp2_u;
-	uint32_t g_comp2_addr_incr;
-	uint8_t reserved5[0x4];
-	uint32_t g_comp3_l;
-	uint32_t g_comp3_u;
-	uint32_t g_comp3_addr_incr;
-	uint8_t reserved6[0x4];
-	uint32_t g_tcon;
-	uint32_t g_int_cstat;
-	uint32_t g_int_enb;
-	uint32_t g_wstat;
-	uint8_t reserved7[0xb0];
-	uint32_t l0_tcntb;
-	uint32_t l0_tcnto;
-	uint32_t l0_icntb;
-	uint32_t l0_icnto;
-	uint32_t l0_frcntb;
-	uint32_t l0_frcnto;
-	uint8_t reserved8[0x8];
-	uint32_t l0_tcon;
-	uint8_t reserved9[0xc];
-	uint32_t l0_int_cstat;
-	uint32_t l0_int_enb;
-	uint8_t reserved10[0x8];
-	uint32_t l0_wstat;
-	uint8_t reserved11[0xbc];
-	uint32_t l1_tcntb;
-	uint32_t l1_tcnto;
-	uint32_t l1_icntb;
-	uint32_t l1_icnto;
-	uint32_t l1_frcntb;
-	uint32_t l1_frcnto;
-	uint8_t reserved12[0x8];
-	uint32_t l1_tcon;
-	uint8_t reserved13[0xc];
-	uint32_t l1_int_cstat;
-	uint32_t l1_int_enb;
-	uint8_t reserved14[0x8];
-	uint32_t l1_wstat;
-};
-
-uint64_t timer_hz(void)
-{
-	return CONFIG_LP_TIMER_MCT_HZ;
-}
-
-uint64_t timer_raw_value(void)
-{
-	static int enabled = 0;
-
-	struct mct_regs * const mct =
-		(struct mct_regs *)(uintptr_t)CONFIG_LP_TIMER_MCT_ADDRESS;
-
-	if (!enabled) {
-		writel(readl(&mct->g_tcon) | (0x1 << 8), &mct->g_tcon);
-		enabled = 1;
-	}
-
-	uint64_t upper = readl(&mct->g_cnt_u);
-	uint64_t lower = readl(&mct->g_cnt_l);
-
-	return (upper << 32) | lower;
-}