u-boot/cpu/mpc824x/drivers/i2o/i2o2.S

/**************************************
 *
 * copyright @ Motorola, 1999
 *
 **************************************/

/**********************************************************
 * function: load_runtime_reg
 *
 * input:  r3 - value of eumbbar
 *         r4 - register offset in embedded utility space
 *
 * output: r3 - register content
 **********************************************************/
      .text
      .align 2
      .global load_runtime_reg

load_runtime_reg:

		  xor r5,r5,r5
	  or  r5,r5,r3       /* save eumbbar */

	      lwbrx	r3,r4,r5
	      sync

	      bclr 20, 0

/****************************************************************
 * function: store_runtime_reg
 *
 * input: r3 - value of eumbbar
 *        r4 - register offset in embedded utility space
 *        r5 - new value to be stored
 *
 ****************************************************************/
	   .text
	   .align 2
	   .global store_runtime_reg
store_runtime_reg:

		  xor r0,r0,r0

	      stwbrx r5,  r4, r3
	      sync

		  bclr   20,0
Initial revision 2001-11-28 17:49:55 +00:00			`/**************************************`
			`*`
			`* copyright @ Motorola, 1999`
			`*`
			`**************************************/`

			`/**********************************************************`
			`* function: load_runtime_reg`
			`*`
			`* input: r3 - value of eumbbar`
			`* r4 - register offset in embedded utility space`
			`*`
			`* output: r3 - register content`
			`**********************************************************/`
			`.text`
			`.align 2`
			`.global load_runtime_reg`

			`load_runtime_reg:`

			`xor r5,r5,r5`
* Code cleanup: - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen) 2003-06-27 21:31:46 +00:00			`or r5,r5,r3 /* save eumbbar */`
Initial revision 2001-11-28 17:49:55 +00:00
			`lwbrx r3,r4,r5`
			`sync`

* Code cleanup: - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen) 2003-06-27 21:31:46 +00:00			`bclr 20, 0`
Initial revision 2001-11-28 17:49:55 +00:00
			`/****************************************************************`
			`* function: store_runtime_reg`
			`*`
			`* input: r3 - value of eumbbar`
			`* r4 - register offset in embedded utility space`
			`* r5 - new value to be stored`
			`*`
			`****************************************************************/`
* Code cleanup: - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen) 2003-06-27 21:31:46 +00:00			`.text`
			`.align 2`
			`.global store_runtime_reg`
Initial revision 2001-11-28 17:49:55 +00:00			`store_runtime_reg:`

			`xor r0,r0,r0`

			`stwbrx r5, r4, r3`
			`sync`

			`bclr 20,0`