a0392222d9
Activate USE_OF, add a sample DTS file and convert the core soc code to OF. Signed-off-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3803/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*
|
|
* EBU - the external bus unit attaches PCI, NOR and NAND
|
|
*
|
|
* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/ioport.h>
|
|
|
|
#include <lantiq_soc.h>
|
|
|
|
static struct resource ltq_ebu_resource = {
|
|
.name = "ebu",
|
|
.start = LTQ_EBU_BASE_ADDR,
|
|
.end = LTQ_EBU_BASE_ADDR + LTQ_EBU_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
/* remapped base addr of the clock unit and external bus unit */
|
|
void __iomem *ltq_ebu_membase;
|
|
|
|
static int __init lantiq_ebu_init(void)
|
|
{
|
|
/* insert and request the memory region */
|
|
if (insert_resource(&iomem_resource, <q_ebu_resource) < 0)
|
|
panic("Failed to insert ebu memory");
|
|
|
|
if (request_mem_region(ltq_ebu_resource.start,
|
|
resource_size(<q_ebu_resource), "ebu") < 0)
|
|
panic("Failed to request ebu memory");
|
|
|
|
/* remap ebu register range */
|
|
ltq_ebu_membase = ioremap_nocache(ltq_ebu_resource.start,
|
|
resource_size(<q_ebu_resource));
|
|
if (!ltq_ebu_membase)
|
|
panic("Failed to remap ebu memory");
|
|
|
|
/* make sure to unprotect the memory region where flash is located */
|
|
ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_BUSCON0) & ~EBU_WRDIS, LTQ_EBU_BUSCON0);
|
|
return 0;
|
|
}
|
|
|
|
postcore_initcall(lantiq_ebu_init);
|