mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 00:15:51 +07:00
5c9f303e99
While powerpc is a mess of implicit includes by prom.h, microblaze just copied this and is easily fixed. Add the necessary explicit includes and remove unnecessary includes and other parts from prom.h Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: Michal Simek <monstr@monstr.eu> Cc: microblaze-uclinux@itee.uq.edu.au Cc: netdev@vger.kernel.org
148 lines
3.8 KiB
C
148 lines
3.8 KiB
C
/*
|
|
* Procedures for creating, accessing and interpreting the device tree.
|
|
*
|
|
* Paul Mackerras August 1996.
|
|
* Copyright (C) 1996-2005 Paul Mackerras.
|
|
*
|
|
* Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
|
|
* {engebret|bergner}@us.ibm.com
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include <linux/export.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/init.h>
|
|
#include <linux/threads.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/stringify.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/initrd.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/kexec.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/of_fdt.h>
|
|
|
|
#include <asm/prom.h>
|
|
#include <asm/page.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/irq.h>
|
|
#include <linux/io.h>
|
|
#include <asm/mmu.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/sections.h>
|
|
#include <asm/pci-bridge.h>
|
|
|
|
#ifdef CONFIG_EARLY_PRINTK
|
|
static char *stdout;
|
|
|
|
static int __init early_init_dt_scan_chosen_serial(unsigned long node,
|
|
const char *uname, int depth, void *data)
|
|
{
|
|
unsigned long l;
|
|
char *p;
|
|
|
|
pr_debug("%s: depth: %d, uname: %s\n", __func__, depth, uname);
|
|
|
|
if (depth == 1 && (strcmp(uname, "chosen") == 0 ||
|
|
strcmp(uname, "chosen@0") == 0)) {
|
|
p = of_get_flat_dt_prop(node, "linux,stdout-path", &l);
|
|
if (p != NULL && l > 0)
|
|
stdout = p; /* store pointer to stdout-path */
|
|
}
|
|
|
|
if (stdout && strstr(stdout, uname)) {
|
|
p = of_get_flat_dt_prop(node, "compatible", &l);
|
|
pr_debug("Compatible string: %s\n", p);
|
|
|
|
if ((strncmp(p, "xlnx,xps-uart16550", 18) == 0) ||
|
|
(strncmp(p, "xlnx,axi-uart16550", 18) == 0)) {
|
|
unsigned int addr;
|
|
|
|
*(u32 *)data = UART16550;
|
|
|
|
addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l);
|
|
addr += *(u32 *)of_get_flat_dt_prop(node,
|
|
"reg-offset", &l);
|
|
/* clear register offset */
|
|
return be32_to_cpu(addr) & ~3;
|
|
}
|
|
if ((strncmp(p, "xlnx,xps-uartlite", 17) == 0) ||
|
|
(strncmp(p, "xlnx,opb-uartlite", 17) == 0) ||
|
|
(strncmp(p, "xlnx,axi-uartlite", 17) == 0) ||
|
|
(strncmp(p, "xlnx,mdm", 8) == 0)) {
|
|
unsigned int *addrp;
|
|
|
|
*(u32 *)data = UARTLITE;
|
|
|
|
addrp = of_get_flat_dt_prop(node, "reg", &l);
|
|
return be32_to_cpup(addrp); /* return address */
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* this function is looking for early console - Microblaze specific */
|
|
int __init of_early_console(void *version)
|
|
{
|
|
return of_scan_flat_dt(early_init_dt_scan_chosen_serial, version);
|
|
}
|
|
#endif
|
|
|
|
void __init early_init_devtree(void *params)
|
|
{
|
|
pr_debug(" -> early_init_devtree(%p)\n", params);
|
|
|
|
early_init_dt_scan(params);
|
|
if (!strlen(boot_command_line))
|
|
strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
|
|
|
|
parse_early_param();
|
|
|
|
memblock_allow_resize();
|
|
|
|
pr_debug("Phys. mem: %lx\n", (unsigned long) memblock_phys_mem_size());
|
|
|
|
pr_debug(" <- early_init_devtree()\n");
|
|
}
|
|
|
|
/*******
|
|
*
|
|
* New implementation of the OF "find" APIs, return a refcounted
|
|
* object, call of_node_put() when done. The device tree and list
|
|
* are protected by a rw_lock.
|
|
*
|
|
* Note that property management will need some locking as well,
|
|
* this isn't dealt with yet.
|
|
*
|
|
*******/
|
|
|
|
#if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
|
|
static struct debugfs_blob_wrapper flat_dt_blob;
|
|
|
|
static int __init export_flat_device_tree(void)
|
|
{
|
|
struct dentry *d;
|
|
|
|
flat_dt_blob.data = initial_boot_params;
|
|
flat_dt_blob.size = initial_boot_params->totalsize;
|
|
|
|
d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
|
|
of_debugfs_root, &flat_dt_blob);
|
|
if (!d)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
device_initcall(export_flat_device_tree);
|
|
#endif
|