diff options
| -rw-r--r-- | drivers/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/Makefile | 1 | ||||
| -rw-r--r-- | drivers/ram/Kconfig | 18 | ||||
| -rw-r--r-- | drivers/ram/Makefile | 7 | ||||
| -rw-r--r-- | drivers/ram/ram-uclass.c | 28 | ||||
| -rw-r--r-- | include/dm/uclass-id.h | 1 | ||||
| -rw-r--r-- | include/ram.h | 38 | ||||
| -rw-r--r-- | scripts/Makefile.spl | 1 |
8 files changed, 96 insertions, 0 deletions
diff --git a/drivers/Kconfig b/drivers/Kconfig index 5ebc89d..64c2793 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -34,6 +34,8 @@ source "drivers/gpio/Kconfig" source "drivers/power/Kconfig" +source "drivers/ram/Kconfig" + source "drivers/hwmon/Kconfig" source "drivers/watchdog/Kconfig" diff --git a/drivers/Makefile b/drivers/Makefile index c090aba..4f859dc 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_LED) += led/ obj-y += misc/ obj-y += pcmcia/ obj-y += dfu/ +obj-$(CONFIG_RAM) += ram/ obj-y += rtc/ obj-y += sound/ obj-y += tpm/ diff --git a/drivers/ram/Kconfig b/drivers/ram/Kconfig new file mode 100644 index 0000000..642a2d8 --- /dev/null +++ b/drivers/ram/Kconfig @@ -0,0 +1,18 @@ +config RAM + bool "Enable RAM drivers using Driver Model" + depends on DM + help + This allows drivers to be provided for SDRAM and other RAM + controllers and their type to be specified in the board's device + tree. Generally some parameters are required to set up the RAM and + the RAM size can either be statically defined or dynamically + detected. + +config SPL_RAM_SUPPORT + bool "Enable RAM support in SPL" + depends on RAM + help + The RAM subsystem adds a small amount of overhead to the image. + If this is acceptable and you have a need to use RAM drivers in + SPL, enable this option. It might provide a cleaner interface to + setting up RAM (e.g. SDRAM / DDR) within SPL. diff --git a/drivers/ram/Makefile b/drivers/ram/Makefile new file mode 100644 index 0000000..4494d81 --- /dev/null +++ b/drivers/ram/Makefile @@ -0,0 +1,7 @@ +# +# Copyright (c) 2015 Google, Inc +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# SPDX-License-Identifier: GPL-2.0+ +# +obj-$(CONFIG_RAM) += ram-uclass.o diff --git a/drivers/ram/ram-uclass.c b/drivers/ram/ram-uclass.c new file mode 100644 index 0000000..2f1fbe7 --- /dev/null +++ b/drivers/ram/ram-uclass.c @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2015 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <ram.h> +#include <dm.h> +#include <errno.h> +#include <dm/lists.h> +#include <dm/root.h> + +int ram_get_info(struct udevice *dev, struct ram_info *info) +{ + struct ram_ops *ops = ram_get_ops(dev); + + if (!ops->get_info) + return -ENOSYS; + + return ops->get_info(dev, info); +} + +UCLASS_DRIVER(ram) = { + .id = UCLASS_RAM, + .name = "ram", +}; diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index cba7c0a..93a3857 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -28,6 +28,7 @@ enum uclass_id { UCLASS_CPU, /* CPU, typically part of an SoC */ UCLASS_CROS_EC, /* Chrome OS EC */ UCLASS_DISPLAY_PORT, /* Display port video */ + UCLASS_RAM, /* RAM controller */ UCLASS_ETH, /* Ethernet device */ UCLASS_GPIO, /* Bank of general-purpose I/O pins */ UCLASS_I2C, /* I2C bus */ diff --git a/include/ram.h b/include/ram.h new file mode 100644 index 0000000..e2172a8 --- /dev/null +++ b/include/ram.h @@ -0,0 +1,38 @@ +/* + * Copyright (c) 2015 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __RAM_H +#define __RAM_H + +struct ram_info { + phys_addr_t base; + size_t size; +}; + +struct ram_ops { + /** + * get_info() - Get basic memory info + * + * @dev: Device to check (UCLASS_RAM) + * @info: Place to put info + * @return 0 if OK, -ve on error + */ + int (*get_info)(struct udevice *dev, struct ram_info *info); +}; + +#define ram_get_ops(dev) ((struct ram_ops *)(dev)->driver->ops) + +/** + * ram_get_info() - Get information about a RAM device + * + * @dev: Device to check (UCLASS_RAM) + * @info: Returns RAM info + * @return 0 if OK, -ve on error + */ +int ram_get_info(struct udevice *dev, struct ram_info *info); + +#endif diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl index 59d7fc8..277958a 100644 --- a/scripts/Makefile.spl +++ b/scripts/Makefile.spl @@ -78,6 +78,7 @@ libs-$(CONFIG_SPL_NET_SUPPORT) += net/ libs-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/ libs-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/phy/ libs-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/net/phy/ +libs-$(CONFIG_SPL_RAM_SUPPORT) += drivers/ram/ libs-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += drivers/usb/musb-new/ libs-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/usb/gadget/ libs-$(CONFIG_SPL_WATCHDOG_SUPPORT) += drivers/watchdog/ |