diff options
| author | Simon Glass <sjg@chromium.org> | 2018-11-15 18:44:09 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-26 08:25:37 -0500 |
| commit | b0edea3c27af3bf7b959fa190a7fe9d7881153c5 (patch) | |
| tree | e48319d91713218a49706b7526f147f2d56c7aee /include | |
| parent | 27028f186d17a25507eb7d5c9b852d8555432679 (diff) | |
spl: Add support for passing handoff info to U-Boot proper
There is some basic informaton that SPL normally wants to pass through to
U-Boot, such as the SDRAM size and bank information.
Mkae use of the new bloblist structure for this. Add a new 'handoff' blob
which is set up in SPL and passed to U-Boot proper. Also adda test for
sandbox_spl that checks that this works correctly and a new 'sb' command
to show the information passed from SPL.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/global_data.h | 3 | ||||
| -rw-r--r-- | include/handoff.h | 36 | ||||
| -rw-r--r-- | include/spl.h | 1 |
3 files changed, 40 insertions, 0 deletions
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h index ccf361ed88a..dffd6b26026 100644 --- a/include/asm-generic/global_data.h +++ b/include/asm-generic/global_data.h @@ -125,6 +125,9 @@ typedef struct global_data { #if CONFIG_IS_ENABLED(BLOBLIST) struct bloblist_hdr *bloblist; /* Bloblist information */ struct bloblist_hdr *new_bloblist; /* Relocated blolist info */ +# ifdef CONFIG_SPL + struct spl_handoff *spl_handoff; +# endif #endif } gd_t; #endif diff --git a/include/handoff.h b/include/handoff.h new file mode 100644 index 00000000000..aacb0f5ebf2 --- /dev/null +++ b/include/handoff.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Passing basic information from SPL to U-Boot proper + * + * Copyright 2018 Google, Inc + */ + +#ifndef __HANDOFF_H +#define __HANDOFF_H + +#if CONFIG_IS_ENABLED(HANDOFF) + +#include <asm/handoff.h> + +/** + * struct spl_handoff - information passed from SPL to U-Boot proper + * + * @ram_size: Value to use for gd->ram_size + */ +struct spl_handoff { + struct arch_spl_handoff arch; + u64 ram_size; +#ifdef CONFIG_NR_DRAM_BANKS + struct { + u64 start; + u64 size; + } ram_bank[CONFIG_NR_DRAM_BANKS]; +#endif +}; + +void handoff_save_dram(struct spl_handoff *ho); +void handoff_load_dram_size(struct spl_handoff *ho); +void handoff_load_dram_banks(struct spl_handoff *ho); +#endif + +#endif diff --git a/include/spl.h b/include/spl.h index 205aaff4b9d..ee92832f0ae 100644 --- a/include/spl.h +++ b/include/spl.h @@ -11,6 +11,7 @@ /* Platform-specific defines */ #include <linux/compiler.h> #include <asm/spl.h> +#include <handoff.h> /* Value in r0 indicates we booted from U-Boot */ #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642 |