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Diffstat (limited to 'doc/README.standalone')
| -rw-r--r-- | doc/README.standalone | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/doc/README.standalone b/doc/README.standalone index 3495f54f5..81b949a0a 100644 --- a/doc/README.standalone +++ b/doc/README.standalone @@ -21,9 +21,10 @@ Design Notes on Exporting U-Boot Functions to Standalone Applications: 2. The pointer to the jump table is passed to the application in a 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. + structure: r2 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: |