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| author | Mike Frysinger <vapier@gentoo.org> | 2008-02-04 19:26:54 -0500 | 
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2008-02-04 19:26:54 -0500 | 
| commit | 4c58eb5552220e425c8af6ac8d2839244a2f57b1 (patch) | |
| tree | 4c98c4e1f2511d3f15c88e439c3af4e2991e1de4 /doc/README.standalone | |
| parent | 32a9f5f2160a034ea87ea651b233ef7c635e55cf (diff) | |
| download | olio-uboot-2014.01-4c58eb5552220e425c8af6ac8d2839244a2f57b1.tar.xz olio-uboot-2014.01-4c58eb5552220e425c8af6ac8d2839244a2f57b1.zip | |
add some more Blackfin docs
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'doc/README.standalone')
| -rw-r--r-- | doc/README.standalone | 21 | 
1 files changed, 11 insertions, 10 deletions
| diff --git a/doc/README.standalone b/doc/README.standalone index 39988317e..3495f54f5 100644 --- a/doc/README.standalone +++ b/doc/README.standalone @@ -19,11 +19,11 @@ Design Notes on Exporting U-Boot Functions to Standalone Applications:     thus the compiler cannot perform type checks on these assignments.  2. The pointer to the jump table is passed to the application in a -   machine-dependent way. PowerPC, ARM and MIPS architectures use a -   dedicated register to hold the pointer to the 'global_data' -   structure: r29 on PowerPC, r8 on ARM and k0 on MIPS. The x86 -   architecture does not use such a register; instead, the pointer to -   the 'global_data' structure is passed as 'argv[-1]' pointer. +   machine-dependent way. PowerPC, ARM, MIPS and Blackfin architectures +   use a dedicated register to hold the pointer to the 'global_data' +   structure: r29 on PowerPC, r8 on ARM, k0 on MIPS, and P5 on Blackfin. +   The x86 architecture does not use such a register; instead, the pointer +   to the 'global_data' structure is passed as 'argv[-1]' pointer.     The application can access the 'global_data' structure in the same     way as U-Boot does: @@ -49,11 +49,12 @@ Design Notes on Exporting U-Boot Functions to Standalone Applications:  4. The default load and start addresses of the applications are as     follows: -		Load address	Start address -	x86	0x00040000	0x00040000 -	PowerPC	0x00040000	0x00040004 -	ARM	0x0c100000	0x0c100000 -	MIPS	0x80200000	0x80200000 +			Load address	Start address +	x86		0x00040000	0x00040000 +	PowerPC		0x00040000	0x00040004 +	ARM		0x0c100000	0x0c100000 +	MIPS		0x80200000	0x80200000 +	Blackfin	0x00001000	0x00001000     For example, the "hello world" application may be loaded and     executed on a PowerPC board with the following commands: |