From cf7b4989083cb3fd1adf34dc5e07d4ac253e8f85 Mon Sep 17 00:00:00 2001 From: Edward O'Callaghan Date: Wed, 23 Apr 2014 21:52:25 +1000 Subject: superio/fintek/*: Factor out generic romstage component The romstage of Fintek Super I/O's is identical, leading to replication of essentially the same code prone to bitrot. Herein we consolidate the early pre-ram UART initialisation code into fintek/common, rather we leave the exceptions to be implemented under model/. More precisely we provide a well documented version of early_serial.c under fintek/common and select by way of Kconfig as a generic romstage component to Super I/O support. We leave future Super I/O's the option to implement `non-standard` initialisation code should such a (unlikely) need araise. A primary advantage is that new support for romstage serial is now trival to add. We also provide some Kconfig documentation while here. Change-Id: I3c62561558a62ece944a167ba302fb7076bba001 Signed-off-by: Edward O'Callaghan Reviewed-on: http://review.coreboot.org/5575 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/superio/fintek/f71869ad/Makefile.inc | 1 - src/superio/fintek/f71869ad/early_serial.c | 68 ------------------------------ src/superio/fintek/f71869ad/f71869ad.h | 2 - 3 files changed, 71 deletions(-) delete mode 100644 src/superio/fintek/f71869ad/early_serial.c (limited to 'src/superio/fintek/f71869ad') diff --git a/src/superio/fintek/f71869ad/Makefile.inc b/src/superio/fintek/f71869ad/Makefile.inc index 12efbebeb8..117239a2bf 100644 --- a/src/superio/fintek/f71869ad/Makefile.inc +++ b/src/superio/fintek/f71869ad/Makefile.inc @@ -18,5 +18,4 @@ ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ## -romstage-$(CONFIG_SUPERIO_FINTEK_F71869AD) += early_serial.c ramstage-$(CONFIG_SUPERIO_FINTEK_F71869AD) += superio.c diff --git a/src/superio/fintek/f71869ad/early_serial.c b/src/superio/fintek/f71869ad/early_serial.c deleted file mode 100644 index 85184007ac..0000000000 --- a/src/superio/fintek/f71869ad/early_serial.c +++ /dev/null @@ -1,68 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Edward O'Callaghan - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/* - * Pre-RAM driver for the Fintek F71869AD Super I/O chip. - * - * Derived from p.34 in vendor data-sheet: - * - * - default index port : 0x4E - * - default data port : 0x4F - * - * - enable configuration : 0x87 - * - disable configuration : 0xAA - * - */ - -#include -#include -#include "f71869ad.h" - -/* - * Enable configuration: pass entry key '0x87' into index port dev. - */ -static void pnp_enter_conf_state(device_t dev) -{ - u16 port = dev >> 8; - outb(0x87, port); - outb(0x87, port); -} - -/* - * Disable configuration: pass exit key '0xAA' into index port dev. - */ -static void pnp_exit_conf_state(device_t dev) -{ - u16 port = dev >> 8; - outb(0xaa, port); -} - -/* - * Bring up early serial debugging output before the RAM is initialized. - */ -void f71869ad_enable_serial(device_t dev, u16 iobase) -{ - pnp_enter_conf_state(dev); - pnp_set_logical_device(dev); - pnp_set_enable(dev, 0); - pnp_set_iobase(dev, PNP_IDX_IO0, iobase); - pnp_set_enable(dev, 1); - pnp_exit_conf_state(dev); -} diff --git a/src/superio/fintek/f71869ad/f71869ad.h b/src/superio/fintek/f71869ad/f71869ad.h index 43a4397451..3aeac56b82 100644 --- a/src/superio/fintek/f71869ad/f71869ad.h +++ b/src/superio/fintek/f71869ad/f71869ad.h @@ -32,6 +32,4 @@ #define F71869AD_BSEL 0x07 /* BSEL */ #define F71869AD_PME 0x0a /* Power Management Events (PME) and ACPI */ -void f71869ad_enable_serial(device_t dev, u16 iobase); - #endif /* SUPERIO_FINTEK_F71869AD_H */ -- cgit v1.2.3