X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=doc%2FREADME.standalone;h=2be5f27696fcf84fbe50b9da704e7fa160bd4bf5;hb=99310d144852a8f0b7dbb3d9c7b575c37781b2c1;hp=885c92fb3a27d969c0b60bbbf2174dedcb2deccb;hpb=c4db335c2e0805e1ce4c33d278b77492c0812353;p=karo-tx-uboot.git diff --git a/doc/README.standalone b/doc/README.standalone index 885c92fb3a..2be5f27696 100644 --- a/doc/README.standalone +++ b/doc/README.standalone @@ -19,12 +19,12 @@ 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, MIPS and Blackfin architectures - use a dedicated register to hold the pointer to the 'global_data' - structure: r2 on PowerPC, r8 on ARM, k0 on MIPS, and P3 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. + machine-dependent way. PowerPC, ARM, MIPS, Blackfin and Nios II + architectures use a dedicated register to hold the pointer to the + 'global_data' structure: r2 on PowerPC, r8 on ARM, k0 on MIPS, + P3 on Blackfin and gp on Nios II. 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: @@ -40,7 +40,7 @@ Design Notes on Exporting U-Boot Functions to Standalone Applications: that returns the ABI version of the running U-Boot. I.e., a typical application startup may look like this: - int my_app (int argc, char *argv[]) + int my_app (int argc, char * const argv[]) { app_startup (argv); if (get_version () != XF_VERSION) @@ -56,6 +56,8 @@ Design Notes on Exporting U-Boot Functions to Standalone Applications: ARM 0x0c100000 0x0c100000 MIPS 0x80200000 0x80200000 Blackfin 0x00001000 0x00001000 + NDS32 0x00300000 0x00300000 + Nios II 0x02000000 0x02000000 For example, the "hello world" application may be loaded and executed on a PowerPC board with the following commands: