* contains U-Boot SPL, optionally it can also contain additional arguments.
* The number of these arguments is in r0, pointer to the argument array in r1.
* BootROM expects executable BIN header code to return to address stored in lr.
- * Other registers (r2 - r12) must be preserved. We save all registers to
- * CONFIG_SPL_BOOTROM_SAVE address. BIN header arguments (passed via r0 and r1)
+ * Other registers (r2 - r12) must be preserved. We save all registers to the
+ * address of CONFIG_SPL_STACK + 4. BIN header arguments (passed via r0 and r1)
* are currently not used by U-Boot SPL binary.
*/
ENTRY(save_boot_params)
stmfd sp!, {r0 - r12, lr} /* @ save registers on stack */
- ldr r12, =CONFIG_SPL_BOOTROM_SAVE
+ ldr r12, =(CONFIG_SPL_STACK + 4)
str sp, [r12]
b save_boot_params_ret
ENDPROC(save_boot_params)
ENTRY(return_to_bootrom)
- ldr r12, =CONFIG_SPL_BOOTROM_SAVE
+ ldr r12, =(CONFIG_SPL_STACK + 4)
ldr sp, [r12]
ldmfd sp!, {r0 - r12, lr} /* @ restore registers from stack */
mov r0, #0x0 /* @ return value: 0x0 NO_ERR */