diff options
| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2019-12-10 14:53:00 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-12-17 13:05:49 +0000 |
| commit | a4e9395979b73182fa2b944271e4436c812f4e91 (patch) | |
| tree | 6069419b751878db39331fbc0ab89ae0087fe525 /src/superio | |
| parent | 021462bb263040470c619c1360a44cd747bf86e8 (diff) | |
superio/aspeed/ast2400: Add AST2500 support
The AST2500 is similar to the AST2400, but it also supports ESPI mode.
In ESPI mode the IRQ level must be 0 and UART3/UART4 aren't usable.
Change-Id: Iea45740427ad56656040e6342f5316ec9d38122f
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37641
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/superio')
| -rw-r--r-- | src/superio/aspeed/ast2400/chip.h | 22 | ||||
| -rw-r--r-- | src/superio/aspeed/ast2400/superio.c | 24 |
2 files changed, 45 insertions, 1 deletions
diff --git a/src/superio/aspeed/ast2400/chip.h b/src/superio/aspeed/ast2400/chip.h new file mode 100644 index 0000000000..4f1c5f022d --- /dev/null +++ b/src/superio/aspeed/ast2400/chip.h @@ -0,0 +1,22 @@ +/* + * This file is part of the coreboot project. + * + * 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. + */ + +#ifndef __SUPERIO_ASPEED__AST2400_CHIP_H__ +#define __SUPERIO_ASPEED__AST2400_CHIP_H__ + +struct superio_aspeed_ast2400_config { + /* On AST2500 only 1: ESPI, 0: LPC */ + bool use_espi; +}; + +#endif /* __SUPERIO_ASPEED__AST2400_CHIP_H__ */ diff --git a/src/superio/aspeed/ast2400/superio.c b/src/superio/aspeed/ast2400/superio.c index a41bba787e..37a7c9d30c 100644 --- a/src/superio/aspeed/ast2400/superio.c +++ b/src/superio/aspeed/ast2400/superio.c @@ -22,12 +22,23 @@ #include <superio/common/ssdt.h> #include <arch/acpi.h> #include "ast2400.h" +#include "chip.h" static void ast2400_init(struct device *dev) { + struct superio_aspeed_ast2400_config *conf = dev->chip_info; + if (!dev->enabled) return; + if (conf && conf->use_espi) { + pnp_enter_conf_mode(dev); + pnp_set_logical_device(dev); + /* In ESPI mode must write 0 to IRQ level on every LDN */ + pnp_write_config(dev, 0x70, 0); + pnp_exit_conf_mode(dev); + } + switch (dev->path.pnp.device) { case AST2400_KBC: pc_keyboard_init(NO_AUX_DEVICE); @@ -94,11 +105,22 @@ static struct pnp_info pnp_dev_info[] = { static void enable_dev(struct device *dev) { + struct superio_aspeed_ast2400_config *conf = dev->chip_info; + + if (conf && conf->use_espi) { + /* UART3 and UART4 are not usable in ESPI mode */ + for (size_t i = 0; i < ARRAY_SIZE(pnp_dev_info); i++) { + if ((pnp_dev_info[i].function == AST2400_SUART3) || + (pnp_dev_info[i].function == AST2400_SUART4)) + pnp_dev_info[i].function = PNP_SKIP_FUNCTION; + } + } + pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info); } struct chip_operations superio_aspeed_ast2400_ops = { - CHIP_NAME("ASpeed AST2400 Super I/O") + CHIP_NAME("ASpeed AST2400/AST2500 Super I/O") .enable_dev = enable_dev, }; |