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coreboot-kgpe-d16/src/mainboard/google/snow/mainboard.c

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Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
/*
exynos/snow: Move core/memory clock-related and board ID code This patch moves ARM core and DRAM timing functions around to simplify the dependencies for system_clock_init(). The original code was architected such that the system_clock_init() function called other functions to obtain core and memory timings. Due to the way memory timing information must be obtained on Snow, which entails decoding platform-specific board straps, the bottom- up approach resulted in having the low-level clock init code implicitly depend on board and vendor-specific info: main() ->system_clock_init() -> get_arm_ratios() -> CPU-specific code -> clock_get_mem_timings() -> board_get_revision() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table ...then proceed to init clocks ...come back to main() The new approach gathers all board and vendor-specific info in a more appropriate location and passes it into system_clock_init(): main() -> get_arm_ratios() -> CPU-specific code -> get_mem_timings() -> board_get_config() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table -> system_clock_init() ...back to main() Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2271 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04 03:09:58 +01:00
* Copyright (C) 2012 Google Inc.
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
*
* 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; version 2 of
* the License.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
exynos/snow: Move core/memory clock-related and board ID code This patch moves ARM core and DRAM timing functions around to simplify the dependencies for system_clock_init(). The original code was architected such that the system_clock_init() function called other functions to obtain core and memory timings. Due to the way memory timing information must be obtained on Snow, which entails decoding platform-specific board straps, the bottom- up approach resulted in having the low-level clock init code implicitly depend on board and vendor-specific info: main() ->system_clock_init() -> get_arm_ratios() -> CPU-specific code -> clock_get_mem_timings() -> board_get_revision() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table ...then proceed to init clocks ...come back to main() The new approach gathers all board and vendor-specific info in a more appropriate location and passes it into system_clock_init(): main() -> get_arm_ratios() -> CPU-specific code -> get_mem_timings() -> board_get_config() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table -> system_clock_init() ...back to main() Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2271 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04 03:09:58 +01:00
#include <stdlib.h>
#include <gpio.h>
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
#include <device/device.h>
armv7: unify stage hand-off routines This replaces the current stage-specific exit/entry functions with generic versions. Now all stages compile with stage_entry(), which is placed at .text.stage_entry.armv7, and stage_exit(). Snow's ramstage files are also updated to avoid build breakage. Change-Id: I953a2c4b8121bd4b66c3362557997a9ca3aa53b0 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2254 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-02-01 02:05:50 +01:00
#include <console/console.h>
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
exynos/snow: Move core/memory clock-related and board ID code This patch moves ARM core and DRAM timing functions around to simplify the dependencies for system_clock_init(). The original code was architected such that the system_clock_init() function called other functions to obtain core and memory timings. Due to the way memory timing information must be obtained on Snow, which entails decoding platform-specific board straps, the bottom- up approach resulted in having the low-level clock init code implicitly depend on board and vendor-specific info: main() ->system_clock_init() -> get_arm_ratios() -> CPU-specific code -> clock_get_mem_timings() -> board_get_revision() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table ...then proceed to init clocks ...come back to main() The new approach gathers all board and vendor-specific info in a more appropriate location and passes it into system_clock_init(): main() -> get_arm_ratios() -> CPU-specific code -> get_mem_timings() -> board_get_config() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table -> system_clock_init() ...back to main() Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2271 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04 03:09:58 +01:00
#include <cpu/samsung/exynos5-common/gpio.h>
#include <cpu/samsung/exynos5250/gpio.h>
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
exynos/snow: Move core/memory clock-related and board ID code This patch moves ARM core and DRAM timing functions around to simplify the dependencies for system_clock_init(). The original code was architected such that the system_clock_init() function called other functions to obtain core and memory timings. Due to the way memory timing information must be obtained on Snow, which entails decoding platform-specific board straps, the bottom- up approach resulted in having the low-level clock init code implicitly depend on board and vendor-specific info: main() ->system_clock_init() -> get_arm_ratios() -> CPU-specific code -> clock_get_mem_timings() -> board_get_revision() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table ...then proceed to init clocks ...come back to main() The new approach gathers all board and vendor-specific info in a more appropriate location and passes it into system_clock_init(): main() -> get_arm_ratios() -> CPU-specific code -> get_mem_timings() -> board_get_config() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table -> system_clock_init() ...back to main() Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2271 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04 03:09:58 +01:00
#include "mainboard.h"
#define SNOW_BOARD_ID0_GPIO 88 /* GPD0, pin 0 */
#define SNOW_BOARD_ID1_GPIO 89 /* GPD0, pin 1 */
struct {
enum mvl3 id0, id1;
enum snow_board_config config;
} snow_id_map[] = {
/* ID0 ID1 config */
{ LOGIC_0, LOGIC_0, SNOW_CONFIG_SAMSUNG_MP },
{ LOGIC_0, LOGIC_1, SNOW_CONFIG_ELPIDA_MP },
{ LOGIC_1, LOGIC_0, SNOW_CONFIG_SAMSUNG_DVT },
{ LOGIC_1, LOGIC_1, SNOW_CONFIG_ELPIDA_DVT },
{ LOGIC_0, LOGIC_Z, SNOW_CONFIG_SAMSUNG_PVT },
{ LOGIC_1, LOGIC_Z, SNOW_CONFIG_ELPIDA_PVT },
{ LOGIC_Z, LOGIC_0, SNOW_CONFIG_SAMSUNG_MP },
{ LOGIC_Z, LOGIC_Z, SNOW_CONFIG_ELPIDA_MP },
{ LOGIC_Z, LOGIC_1, SNOW_CONFIG_RSVD },
};
int board_get_config(void)
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
{
exynos/snow: Move core/memory clock-related and board ID code This patch moves ARM core and DRAM timing functions around to simplify the dependencies for system_clock_init(). The original code was architected such that the system_clock_init() function called other functions to obtain core and memory timings. Due to the way memory timing information must be obtained on Snow, which entails decoding platform-specific board straps, the bottom- up approach resulted in having the low-level clock init code implicitly depend on board and vendor-specific info: main() ->system_clock_init() -> get_arm_ratios() -> CPU-specific code -> clock_get_mem_timings() -> board_get_revision() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table ...then proceed to init clocks ...come back to main() The new approach gathers all board and vendor-specific info in a more appropriate location and passes it into system_clock_init(): main() -> get_arm_ratios() -> CPU-specific code -> get_mem_timings() -> board_get_config() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table -> system_clock_init() ...back to main() Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2271 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04 03:09:58 +01:00
int i;
int id0, id1;
enum snow_board_config config = SNOW_CONFIG_UNKNOWN;
id0 = gpio_read_mvl3(SNOW_BOARD_ID0_GPIO);
id1 = gpio_read_mvl3(SNOW_BOARD_ID1_GPIO);
if (id0 < 0 || id1 < 0)
return -1;
printk(BIOS_DEBUG, "%s: id0: %u, id1: %u\n", __func__, id0, id1);
for (i = 0; i < ARRAY_SIZE(snow_id_map); i++) {
if (id0 == snow_id_map[i].id0 && id1 == snow_id_map[i].id1) {
config = snow_id_map[i].config;
break;
}
}
return config;
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
}
exynos/snow: Move core/memory clock-related and board ID code This patch moves ARM core and DRAM timing functions around to simplify the dependencies for system_clock_init(). The original code was architected such that the system_clock_init() function called other functions to obtain core and memory timings. Due to the way memory timing information must be obtained on Snow, which entails decoding platform-specific board straps, the bottom- up approach resulted in having the low-level clock init code implicitly depend on board and vendor-specific info: main() ->system_clock_init() -> get_arm_ratios() -> CPU-specific code -> clock_get_mem_timings() -> board_get_revision() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table ...then proceed to init clocks ...come back to main() The new approach gathers all board and vendor-specific info in a more appropriate location and passes it into system_clock_init(): main() -> get_arm_ratios() -> CPU-specific code -> get_mem_timings() -> board_get_config() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table -> system_clock_init() ...back to main() Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2271 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04 03:09:58 +01:00
#if 0
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
struct chip_operations mainboard_ops = {
Chromebooks: mainboard.c: Do not spell Chromebook in CamelCase »Chromebook« is the official spelling [1]. So correct that with the following command. $ git grep -l ChromeBook | xargs sed -i s,ChromeBook,Chromebook, The incorrect spelling was only used for the chip name. [1] http://www.google.com/intl/en/chrome/devices/hp-pavilion-chromebook.html#hp-pav Change-Id: I9c19f399a3e3d36bd644ec375822daa384a14961 Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/2370 Tested-by: build bot (Jenkins) Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-by: Marc Jones <marcj303@gmail.com>
2013-02-12 13:12:51 +01:00
.name = "Samsung/Google ARM Chromebook",
Add minimal mainboard support for snow This is the minimal set of sources that allow the board to build. These need to be filled in with actual code. But if we get these in upstream we can stop working against a WIP patch. Change-Id: I9347a573bb40761f6a12be3ee8febe3ca4be55a3 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2018 Tested-by: build bot (Jenkins)
2012-12-11 01:13:43 +01:00
.enable_dev = mainboard_enable,
};
exynos/snow: Move core/memory clock-related and board ID code This patch moves ARM core and DRAM timing functions around to simplify the dependencies for system_clock_init(). The original code was architected such that the system_clock_init() function called other functions to obtain core and memory timings. Due to the way memory timing information must be obtained on Snow, which entails decoding platform-specific board straps, the bottom- up approach resulted in having the low-level clock init code implicitly depend on board and vendor-specific info: main() ->system_clock_init() -> get_arm_ratios() -> CPU-specific code -> clock_get_mem_timings() -> board_get_revision() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table ...then proceed to init clocks ...come back to main() The new approach gathers all board and vendor-specific info in a more appropriate location and passes it into system_clock_init(): main() -> get_arm_ratios() -> CPU-specific code -> get_mem_timings() -> board_get_config() -> read GPIOs (3-state logic) -> Decode GPIOs in a vendor-specific manner -> Choose memory timings from module-specific look-up table -> system_clock_init() ...back to main() Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2271 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04 03:09:58 +01:00
#endif
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