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authorAlexander Couzens <lynxis@fe80.eu>2015-04-16 02:03:26 +0200
committerPeter Stuge <peter@stuge.se>2015-06-07 01:24:47 +0200
commit7710379da9a5d06c7a6b2bcda29fa834575c551e (patch)
tree5b9b6a899359e9b2425c4b96f3d465b3229d235e /src/acpi
parent88935481c9a76da33df25473469d52c778a13fa4 (diff)
downloadcoreboot-7710379da9a5d06c7a6b2bcda29fa834575c551e.tar.xz
acpi/sata: add generic sata ssdt port generator
generate_sata_ssdt_ports() generates ports based on sata enable map Change-Id: Ie68e19c93f093d6c61634c4adfde484b88f28a77 Signed-off-by: Alexander Couzens <lynxis@fe80.eu> Reviewed-on: http://review.coreboot.org/9708 Tested-by: build bot (Jenkins) Reviewed-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-by: Peter Stuge <peter@stuge.se>
Diffstat (limited to 'src/acpi')
-rw-r--r--src/acpi/Kconfig6
-rw-r--r--src/acpi/Makefile.inc1
-rw-r--r--src/acpi/sata.c64
-rw-r--r--src/acpi/sata.h3
4 files changed, 74 insertions, 0 deletions
diff --git a/src/acpi/Kconfig b/src/acpi/Kconfig
new file mode 100644
index 0000000000..e025f99d2a
--- /dev/null
+++ b/src/acpi/Kconfig
@@ -0,0 +1,6 @@
+
+config ACPI_SATA_GENERATOR
+ bool
+ default n
+ help
+ Use acpi sata port generator.
diff --git a/src/acpi/Makefile.inc b/src/acpi/Makefile.inc
new file mode 100644
index 0000000000..53ac6797ea
--- /dev/null
+++ b/src/acpi/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_ACPI_SATA_GENERATOR) += sata.c
diff --git a/src/acpi/sata.c b/src/acpi/sata.c
new file mode 100644
index 0000000000..60c7992102
--- /dev/null
+++ b/src/acpi/sata.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2015 Alexander Couzens <lynxis@fe80.eu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include "sata.h"
+
+#include <arch/acpi.h>
+#include <arch/acpigen.h>
+
+/* e.g.
+ * generate_sata_ssdt_ports("\_SB.PCI0.SATA", 0x3);
+ * generates:
+ * Scope (\_SB.PCI0.SATA)
+ * {
+ * Device (PR00)
+ * {
+ * Name (_ADR, 0x0000FFFF) // _ADR: Address
+ * }
+ *
+ * Device (PR01)
+ * {
+ * Name (_ADR, 0x0001FFFF) // _ADR: Address
+ * }
+ * }
+ *
+ */
+void generate_sata_ssdt_ports(const char *scope, uint32_t enable_map)
+{
+ int i;
+ uint32_t bit;
+ char port_name[4] = "PR00";
+
+ acpigen_write_scope(scope);
+
+ /* generate a device for every enabled port */
+ for (i = 0; i < 32; i++) {
+ bit = 1 << i;
+ if (!(bit & enable_map))
+ continue;
+
+ port_name[2] = '0' + i / 10;
+ port_name[3] = '0' + i % 10;
+
+ acpigen_write_device(port_name);
+
+ acpigen_write_name_dword("_ADR", 0xffff + i * 0x10000);
+ acpigen_pop_len(); /* close PRT%d */
+ }
+
+ acpigen_pop_len(); /* close scope */
+}
diff --git a/src/acpi/sata.h b/src/acpi/sata.h
new file mode 100644
index 0000000000..af4b03dc12
--- /dev/null
+++ b/src/acpi/sata.h
@@ -0,0 +1,3 @@
+#include <stdint.h>
+
+void generate_sata_ssdt_ports(const char *scope, uint32_t enable_map);