mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 10:18:38 +00:00
44 lines
1,017 B
C
44 lines
1,017 B
C
/*
|
|
* Copyright 2008 Extreme Engineering Solutions, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/mmu.h>
|
|
#ifdef CONFIG_PCA953X
|
|
#include <pca953x.h>
|
|
|
|
/*
|
|
* Determine if a board's flashes are write protected
|
|
*/
|
|
int board_flash_wp_on(void)
|
|
{
|
|
if (pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
|
|
CONFIG_SYS_PCA953X_NVM_WP)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Return a board's derivative model number. For example:
|
|
* return 2 for the XPedite5372 and return 1 for the XPedite5201.
|
|
*/
|
|
uint get_board_derivative(void)
|
|
{
|
|
#if defined(CONFIG_MPC85xx)
|
|
volatile ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
|
|
#elif defined(CONFIG_MPC86xx)
|
|
volatile immap_t *immap = (immap_t *)CONFIG_SYS_CCSRBAR;
|
|
volatile ccsr_gur_t *gur = &immap->im_gur;
|
|
#endif
|
|
|
|
/*
|
|
* The top 4 lines of the local bus address are pulled low/high and
|
|
* can be read to determine the least significant digit of a board's
|
|
* model number.
|
|
*/
|
|
return gur->gpporcr >> 28;
|
|
}
|