Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) // Copyright (c) 2008 Simtec Electronics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) //	http://armlinux.simtec.co.uk/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) //	Ben Dooks <ben@simtec.co.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) // Simtec NOR mapping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mtd/mtd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mtd/map.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mtd/physmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mtd/partitions.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/mach/arch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/mach/map.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/mach/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "map.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "bast.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "simtec.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	val = __raw_readb(BAST_VA_CTRL3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	if (vpp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		val |= BAST_CPLD_CTRL3_ROMWEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		val &= ~BAST_CPLD_CTRL3_ROMWEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	__raw_writeb(val, BAST_VA_CTRL3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static struct physmap_flash_data simtec_nor_pdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	.width		= 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	.set_vpp	= simtec_nor_vpp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	.nr_parts	= 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static struct resource simtec_nor_resource[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	[0] = DEFINE_RES_MEM(S3C2410_CS1 + 0x4000000, SZ_8M),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static struct platform_device simtec_device_nor = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	.name		= "physmap-flash",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	.id		= -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	.num_resources	= ARRAY_SIZE(simtec_nor_resource),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	.resource	= simtec_nor_resource,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	.dev		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 		.platform_data = &simtec_nor_pdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) void __init nor_simtec_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	ret = platform_device_register(&simtec_device_nor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 		printk(KERN_ERR "failed to register physmap-flash device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 		simtec_nor_vpp(NULL, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }