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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/mips/ath79/setup.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/mips/ath79/setup.c')
-rw-r--r--kernel/arch/mips/ath79/setup.c37
1 files changed, 33 insertions, 4 deletions
diff --git a/kernel/arch/mips/ath79/setup.c b/kernel/arch/mips/ath79/setup.c
index fd2a36a79..8755d618e 100644
--- a/kernel/arch/mips/ath79/setup.c
+++ b/kernel/arch/mips/ath79/setup.c
@@ -17,12 +17,16 @@
#include <linux/bootmem.h>
#include <linux/err.h>
#include <linux/clk.h>
+#include <linux/of_platform.h>
+#include <linux/of_fdt.h>
#include <asm/bootinfo.h>
#include <asm/idle.h>
#include <asm/time.h> /* for mips_hpt_frequency */
#include <asm/reboot.h> /* for _machine_{restart,halt} */
#include <asm/mips_machine.h>
+#include <asm/prom.h>
+#include <asm/fw/fw.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
@@ -195,17 +199,28 @@ unsigned int get_c0_compare_int(void)
void __init plat_mem_setup(void)
{
+ unsigned long fdt_start;
+
set_io_port_base(KSEG1);
+ /* Get the position of the FDT passed by the bootloader */
+ fdt_start = fw_getenvl("fdt_start");
+ if (fdt_start)
+ __dt_setup_arch((void *)KSEG0ADDR(fdt_start));
+#ifdef CONFIG_BUILTIN_DTB
+ else
+ __dt_setup_arch(__dtb_start);
+#endif
+
ath79_reset_base = ioremap_nocache(AR71XX_RESET_BASE,
AR71XX_RESET_SIZE);
ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE,
AR71XX_PLL_SIZE);
- ath79_ddr_base = ioremap_nocache(AR71XX_DDR_CTRL_BASE,
- AR71XX_DDR_CTRL_SIZE);
-
ath79_detect_sys_type();
- detect_memory_region(0, ATH79_MEM_SIZE_MIN, ATH79_MEM_SIZE_MAX);
+ ath79_ddr_ctrl_init();
+
+ if (mips_machtype != ATH79_MACH_GENERIC_OF)
+ detect_memory_region(0, ATH79_MEM_SIZE_MIN, ATH79_MEM_SIZE_MAX);
_machine_restart = ath79_restart;
_machine_halt = ath79_halt;
@@ -237,6 +252,10 @@ void __init plat_time_init(void)
static int __init ath79_setup(void)
{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ if (mips_machtype == ATH79_MACH_GENERIC_OF)
+ return 0;
+
ath79_gpio_init();
ath79_register_uart();
ath79_register_wdt();
@@ -248,6 +267,11 @@ static int __init ath79_setup(void)
arch_initcall(ath79_setup);
+void __init device_tree_init(void)
+{
+ unflatten_and_copy_device_tree();
+}
+
static void __init ath79_generic_init(void)
{
/* Nothing to do */
@@ -257,3 +281,8 @@ MIPS_MACHINE(ATH79_MACH_GENERIC,
"Generic",
"Generic AR71XX/AR724X/AR913X based board",
ath79_generic_init);
+
+MIPS_MACHINE(ATH79_MACH_GENERIC_OF,
+ "DTB",
+ "Generic AR71XX/AR724X/AR913X based board (DT)",
+ NULL);