README: update ARM register usage

[karo-tx-uboot.git] / README

diff --git a/README b/README
index ccd47fad3ad151b413c4e480827a0f81ac68ee8c..2fcad7ff856f408cc9e0122b4751cb41fb118794 100644 (file)
--- a/README
+++ b/README
@@ -144,7 +144,6 @@ Directory Hierarchy:
       /arm1136         Files specific to ARM 1136 CPUs
       /ixp             Files specific to Intel XScale IXP CPUs
       /pxa             Files specific to Intel XScale PXA CPUs
-      /s3c44b0         Files specific to Samsung S3C44B0 CPUs
       /sa1100          Files specific to Intel StrongARM SA1100 CPUs
     /lib               Architecture specific library files
   /avr32               Files generic to AVR32 architecture
@@ -5588,15 +5587,17 @@ On ARM, the following registers are used:
 
        R0:     function argument word/integer result
        R1-R3:  function argument word
-       R9:     GOT pointer
-       R10:    stack limit (used only if stack checking if enabled)
+       R9:     platform specific
+       R10:    stack limit (used only if stack checking is enabled)
        R11:    argument (frame) pointer
        R12:    temporary workspace
        R13:    stack pointer
        R14:    link register
        R15:    program counter
 
-    ==> U-Boot will use R8 to hold a pointer to the global data
+    ==> U-Boot will use R9 to hold a pointer to the global data
+
+    Note: on ARM, only R_ARM_RELATIVE relocations are supported.
 
 On Nios II, the ABI is documented here:
        http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf