diff options
| author | Simon Glass <sjg@chromium.org> | 2015-06-23 15:39:04 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-21 17:39:27 -0600 |
| commit | 6c51df6859fa666d494980f4aa2f19c932898ec1 (patch) | |
| tree | c54afb95d07ef7d60d73d89a3ef13421bd6aec72 /include | |
| parent | 10f5f5a90ed02b00db4e75ff537d37b66d84e119 (diff) | |
| download | blackbird-obmc-uboot-6c51df6859fa666d494980f4aa2f19c932898ec1.tar.gz blackbird-obmc-uboot-6c51df6859fa666d494980f4aa2f19c932898ec1.zip | |
dm: Add support for RAM drivers
Add support for a driver which sets up DRAM and can return information about
the amount of RAM available. This is a first step towards moving RAM init
to driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/dm/uclass-id.h | 1 | ||||
| -rw-r--r-- | include/ram.h | 38 |
2 files changed, 39 insertions, 0 deletions
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index cba7c0a45e..93a38575bd 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 0000000000..e2172a8741 --- /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 |
