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highbank: add of fixup 

depending on the power domain register we need to disable sata or mmc
and update the cpu informations

take from Calxeda U-Boot git

Register the original dtb to /dev/firmware-dtb and the fixed dtb to /dev/dtb

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2013-02-16 19:23:46 +01:00 committed by Sascha Hauer
parent e503b299ef
commit 07ca814239
2 changed files with 52 additions and 1 deletions
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48
arch/arm/boards/highbank/init.c
View File

@ -10,15 +10,57 @@
#include <asm/system_info.h>
#include <generated/mach-types.h>
#include <mach/devices.h>
#include <mach/hardware.h>
#include <mach/sysregs.h>
#include <environment.h>
#include <partition.h>
#include <sizes.h>
#include <io.h>
#include <libfdt.h>
#define FIRMWARE_DTB_BASE 0x1000
#define HB_OPP_VERSION 0
struct fdt_header *fdt = NULL;
static int hb_fixup(struct fdt_header *fdt)
{
u32 reg = readl(sregs_base + HB_SREG_A9_PWRDOM_DATA);
u32 *opp_table = (u32 *)HB_SYSRAM_OPP_TABLE_BASE;
u32 dtb_table[2*10];
u32 i;
u32 num_opps;
__be32 latency;
if (!(reg & HB_PWRDOM_STAT_SATA))
do_fixup_by_compatible_string(fdt, "calxeda,hb-ahci", "status",
"disabled", 1);
if (!(reg & HB_PWRDOM_STAT_EMMC))
do_fixup_by_compatible_string(fdt, "calxeda,hb-sdhci", "status",
"disabled", 1);
if ((opp_table[0] >> 16) != HB_OPP_VERSION)
return 0;
num_opps = opp_table[0] & 0xff;
for (i = 0; i < num_opps; i++) {
dtb_table[2 * i] = cpu_to_be32(opp_table[3 + 3 * i]);
dtb_table[2 * i + 1] = cpu_to_be32(opp_table[2 + 3 * i]);
}
latency = cpu_to_be32(opp_table[1]);
fdt_find_and_setprop(fdt, "/cpus/cpu@0", "transition-latency",
&latency, 4, 1);
fdt_find_and_setprop(fdt, "/cpus/cpu@0", "operating-points",
dtb_table, 8 * num_opps, 1);
return 0;
}
static int highbank_mem_init(void)
{
struct device_node *np;
@ -57,6 +99,7 @@ mem_initcall(highbank_mem_init);
static int highbank_devices_init(void)
{
of_register_fixup(hb_fixup);
if (!fdt) {
highbank_register_gpio(0);
highbank_register_gpio(1);
@ -66,7 +109,10 @@ static int highbank_devices_init(void)
highbank_register_xgmac(0);
highbank_register_xgmac(1);
} else {
devfs_add_partition("ram0", FIRMWARE_DTB_BASE, SZ_64K, DEVFS_PARTITION_FIXED, "dtb");
fdt = of_get_fixed_tree(fdt);
add_mem_device("dtb", (unsigned long)fdt, fdt_totalsize(fdt),
IORESOURCE_MEM_WRITEABLE);
devfs_add_partition("ram0", FIRMWARE_DTB_BASE, SZ_64K, DEVFS_PARTITION_FIXED, "firmware-dtb");
}
armlinux_set_bootparams((void *)(0x00000100));

5
arch/arm/mach-highbank/include/mach/sysregs.h
View File

@ -23,6 +23,11 @@ extern void __iomem *sregs_base;
#define HB_SREG_A9_PWR_REQ 0xf00
#define HB_SREG_A9_BOOT_STAT 0xf04
#define HB_SREG_A9_BOOT_DATA 0xf08
#define HB_SREG_A9_PWRDOM_DATA 0xf20
#define HB_PWRDOM_STAT_SATA 0x80000000
#define HB_PWRDOM_STAT_PCI 0x40000000
#define HB_PWRDOM_STAT_EMMC 0x20000000
#define HB_PWR_SUSPEND 0
#define HB_PWR_SOFT_RESET 1