cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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colibri-pxa3xx.c (3487B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *  arch/arm/mach-pxa/colibri-pxa3xx.c
      4 *
      5 *  Common functions for all Toradex PXA3xx modules
      6 *
      7 *  Daniel Mack <daniel@caiaq.de>
      8 */
      9
     10#include <linux/init.h>
     11#include <linux/kernel.h>
     12#include <linux/platform_device.h>
     13#include <linux/gpio.h>
     14#include <linux/etherdevice.h>
     15#include <asm/mach-types.h>
     16#include <linux/sizes.h>
     17#include <asm/system_info.h>
     18#include <asm/mach/arch.h>
     19#include <asm/mach/irq.h>
     20#include "pxa3xx-regs.h"
     21#include "mfp-pxa300.h"
     22#include "colibri.h"
     23#include <linux/platform_data/mmc-pxamci.h>
     24#include <linux/platform_data/video-pxafb.h>
     25#include <linux/platform_data/mtd-nand-pxa3xx.h>
     26
     27#include "generic.h"
     28#include "devices.h"
     29
     30#if defined(CONFIG_AX88796)
     31#define ETHER_ADDR_LEN 6
     32static u8 ether_mac_addr[ETHER_ADDR_LEN];
     33
     34void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
     35{
     36	int i;
     37	u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
     38
     39	/*
     40	 * If the bootloader passed in a serial boot tag, which contains a
     41	 * valid ethernet MAC, pass it to the interface. Toradex ships the
     42	 * modules with their own bootloader which provides a valid MAC
     43	 * this way.
     44	 */
     45
     46	for (i = 0; i < ETHER_ADDR_LEN; i++) {
     47		ether_mac_addr[i] = serial & 0xff;
     48		serial >>= 8;
     49	}
     50
     51	if (is_valid_ether_addr(ether_mac_addr)) {
     52		plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
     53		plat_data->mac_addr = ether_mac_addr;
     54		printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
     55			__func__);
     56	} else {
     57		plat_data->flags |= AXFLG_MAC_FROMDEV;
     58		printk(KERN_INFO "%s(): no valid serial boot tag found, "
     59			"taking MAC from device\n", __func__);
     60	}
     61}
     62#endif
     63
     64#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
     65static int lcd_bl_pin;
     66
     67/*
     68 * LCD panel (Sharp LQ043T3DX02)
     69 */
     70static void colibri_lcd_backlight(int on)
     71{
     72	gpio_set_value(lcd_bl_pin, !!on);
     73}
     74
     75static struct pxafb_mode_info sharp_lq43_mode = {
     76	.pixclock	= 101936,
     77	.xres		= 480,
     78	.yres		= 272,
     79	.bpp		= 32,
     80	.depth		= 18,
     81	.hsync_len      = 41,
     82	.left_margin    = 2,
     83	.right_margin   = 2,
     84	.vsync_len      = 10,
     85	.upper_margin   = 2,
     86	.lower_margin   = 2,
     87	.sync	   	= 0,
     88	.cmap_greyscale = 0,
     89};
     90
     91static struct pxafb_mach_info sharp_lq43_info = {
     92	.modes		= &sharp_lq43_mode,
     93	.num_modes	= 1,
     94	.cmap_inverse	= 0,
     95	.cmap_static	= 0,
     96	.lcd_conn	= LCD_COLOR_TFT_18BPP,
     97	.pxafb_backlight_power = colibri_lcd_backlight,
     98};
     99
    100void __init colibri_pxa3xx_init_lcd(int bl_pin)
    101{
    102	lcd_bl_pin = bl_pin;
    103	gpio_request(bl_pin, "lcd backlight");
    104	gpio_direction_output(bl_pin, 0);
    105	pxa_set_fb_info(NULL, &sharp_lq43_info);
    106}
    107#endif
    108
    109#if IS_ENABLED(CONFIG_MTD_NAND_MARVELL)
    110static struct mtd_partition colibri_nand_partitions[] = {
    111	{
    112		.name        = "bootloader",
    113		.offset      = 0,
    114		.size        = SZ_512K,
    115		.mask_flags  = MTD_WRITEABLE, /* force read-only */
    116	},
    117	{
    118		.name        = "kernel",
    119		.offset      = MTDPART_OFS_APPEND,
    120		.size        = SZ_4M,
    121		.mask_flags  = MTD_WRITEABLE, /* force read-only */
    122	},
    123	{
    124		.name        = "reserved",
    125		.offset      = MTDPART_OFS_APPEND,
    126		.size        = SZ_1M,
    127		.mask_flags  = MTD_WRITEABLE, /* force read-only */
    128	},
    129	{
    130		.name        = "fs",
    131		.offset      = MTDPART_OFS_APPEND,
    132		.size        = MTDPART_SIZ_FULL,
    133	},
    134};
    135
    136static struct pxa3xx_nand_platform_data colibri_nand_info = {
    137	.keep_config	= 1,
    138	.parts		= colibri_nand_partitions,
    139	.nr_parts	= ARRAY_SIZE(colibri_nand_partitions),
    140};
    141
    142void __init colibri_pxa3xx_init_nand(void)
    143{
    144	pxa3xx_set_nand_info(&colibri_nand_info);
    145}
    146#endif
    147