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-rw-r--r--arch/mips/powertv/asic/asic_devices.c787
1 files changed, 787 insertions, 0 deletions
diff --git a/arch/mips/powertv/asic/asic_devices.c b/arch/mips/powertv/asic/asic_devices.c
new file mode 100644
index 000000000000..bae82880b6b5
--- /dev/null
+++ b/arch/mips/powertv/asic/asic_devices.c
@@ -0,0 +1,787 @@
+/*
+ * ASIC Device List Intialization
+ *
+ * Description: Defines the platform resources for the SA settop.
+ *
+ * Copyright (C) 2005-2009 Scientific-Atlanta, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Author: Ken Eppinett
+ * David Schleef <ds@schleef.org>
+ *
+ * Description: Defines the platform resources for the SA settop.
+ *
+ * NOTE: The bootloader allocates persistent memory at an address which is
+ * 16 MiB below the end of the highest address in KSEG0. All fixed
+ * address memory reservations must avoid this region.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/resource.h>
+#include <linux/serial_reg.h>
+#include <linux/io.h>
+#include <linux/bootmem.h>
+#include <linux/mm.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <asm/page.h>
+#include <linux/swap.h>
+#include <linux/highmem.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/mach-powertv/asic.h>
+#include <asm/mach-powertv/asic_regs.h>
+#include <asm/mach-powertv/interrupts.h>
+
+#ifdef CONFIG_BOOTLOADER_DRIVER
+#include <asm/mach-powertv/kbldr.h>
+#endif
+#include <asm/bootinfo.h>
+
+#define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0))
+
+/*
+ * Forward Prototypes
+ */
+static void pmem_setup_resource(void);
+
+/*
+ * Global Variables
+ */
+enum asic_type asic;
+
+unsigned int platform_features;
+unsigned int platform_family;
+const struct register_map *register_map;
+EXPORT_SYMBOL(register_map); /* Exported for testing */
+unsigned long asic_phy_base;
+unsigned long asic_base;
+EXPORT_SYMBOL(asic_base); /* Exported for testing */
+struct resource *gp_resources;
+static bool usb_configured;
+
+/*
+ * Don't recommend to use it directly, it is usually used by kernel internally.
+ * Portable code should be using interfaces such as ioremp, dma_map_single, etc.
+ */
+unsigned long phys_to_bus_offset;
+EXPORT_SYMBOL(phys_to_bus_offset);
+
+/*
+ *
+ * IO Resource Definition
+ *
+ */
+
+struct resource asic_resource = {
+ .name = "ASIC Resource",
+ .start = 0,
+ .end = ASIC_IO_SIZE,
+ .flags = IORESOURCE_MEM,
+};
+
+/*
+ *
+ * USB Host Resource Definition
+ *
+ */
+
+static struct resource ehci_resources[] = {
+ {
+ .parent = &asic_resource,
+ .start = 0,
+ .end = 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = irq_usbehci,
+ .end = irq_usbehci,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 ehci_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device ehci_device = {
+ .name = "powertv-ehci",
+ .id = 0,
+ .num_resources = 2,
+ .resource = ehci_resources,
+ .dev = {
+ .dma_mask = &ehci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+static struct resource ohci_resources[] = {
+ {
+ .parent = &asic_resource,
+ .start = 0,
+ .end = 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = irq_usbohci,
+ .end = irq_usbohci,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 ohci_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device ohci_device = {
+ .name = "powertv-ohci",
+ .id = 0,
+ .num_resources = 2,
+ .resource = ohci_resources,
+ .dev = {
+ .dma_mask = &ohci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+static struct platform_device *platform_devices[] = {
+ &ehci_device,
+ &ohci_device,
+};
+
+/*
+ *
+ * Platform Configuration and Device Initialization
+ *
+ */
+static void __init fs_update(int pe, int md, int sdiv, int disable_div_by_3)
+{
+ int en_prg, byp, pwr, nsb, val;
+ int sout;
+
+ sout = 1;
+ en_prg = 1;
+ byp = 0;
+ nsb = 1;
+ pwr = 1;
+
+ val = ((sdiv << 29) | (md << 24) | (pe<<8) | (sout<<3) | (byp<<2) |
+ (nsb<<1) | (disable_div_by_3<<5));
+
+ asic_write(val, usb_fs);
+ asic_write(val | (en_prg<<4), usb_fs);
+ asic_write(val | (en_prg<<4) | pwr, usb_fs);
+}
+
+/*
+ * Allow override of bootloader-specified model
+ */
+static char __initdata cmdline[COMMAND_LINE_SIZE];
+
+#define FORCEFAMILY_PARAM "forcefamily"
+
+static __init int check_forcefamily(unsigned char forced_family[2])
+{
+ const char *p;
+
+ forced_family[0] = '\0';
+ forced_family[1] = '\0';
+
+ /* Check the command line for a forcefamily directive */
+ strncpy(cmdline, arcs_cmdline, COMMAND_LINE_SIZE - 1);
+ p = strstr(cmdline, FORCEFAMILY_PARAM);
+ if (p && (p != cmdline) && (*(p - 1) != ' '))
+ p = strstr(p, " " FORCEFAMILY_PARAM "=");
+
+ if (p) {
+ p += strlen(FORCEFAMILY_PARAM "=");
+
+ if (*p == '\0' || *(p + 1) == '\0' ||
+ (*(p + 2) != '\0' && *(p + 2) != ' '))
+ pr_err(FORCEFAMILY_PARAM " must be exactly two "
+ "characters long, ignoring value\n");
+
+ else {
+ forced_family[0] = *p;
+ forced_family[1] = *(p + 1);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * platform_set_family - determine major platform family type.
+ *
+ * Returns family type; -1 if none
+ * Returns the family type; -1 if none
+ *
+ */
+static __init noinline void platform_set_family(void)
+{
+#define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0))
+
+ unsigned char forced_family[2];
+ unsigned short bootldr_family;
+
+ check_forcefamily(forced_family);
+
+ if (forced_family[0] != '\0' && forced_family[1] != '\0')
+ bootldr_family = BOOTLDRFAMILY(forced_family[0],
+ forced_family[1]);
+ else {
+
+#ifdef CONFIG_BOOTLOADER_DRIVER
+ bootldr_family = (unsigned short) kbldr_GetSWFamily();
+#else
+#if defined(CONFIG_BOOTLOADER_FAMILY)
+ bootldr_family = (unsigned short) BOOTLDRFAMILY(
+ CONFIG_BOOTLOADER_FAMILY[0],
+ CONFIG_BOOTLOADER_FAMILY[1]);
+#else
+#error "Unknown Bootloader Family"
+#endif
+#endif
+ }
+
+ pr_info("Bootloader Family = 0x%04X\n", bootldr_family);
+
+ switch (bootldr_family) {
+ case BOOTLDRFAMILY('R', '1'):
+ platform_family = FAMILY_1500;
+ break;
+ case BOOTLDRFAMILY('4', '4'):
+ platform_family = FAMILY_4500;
+ break;
+ case BOOTLDRFAMILY('4', '6'):
+ platform_family = FAMILY_4600;
+ break;
+ case BOOTLDRFAMILY('A', '1'):
+ platform_family = FAMILY_4600VZA;
+ break;
+ case BOOTLDRFAMILY('8', '5'):
+ platform_family = FAMILY_8500;
+ break;
+ case BOOTLDRFAMILY('R', '2'):
+ platform_family = FAMILY_8500RNG;
+ break;
+ case BOOTLDRFAMILY('8', '6'):
+ platform_family = FAMILY_8600;
+ break;
+ case BOOTLDRFAMILY('B', '1'):
+ platform_family = FAMILY_8600VZB;
+ break;
+ case BOOTLDRFAMILY('E', '1'):
+ platform_family = FAMILY_1500VZE;
+ break;
+ case BOOTLDRFAMILY('F', '1'):
+ platform_family = FAMILY_1500VZF;
+ break;
+ default:
+ platform_family = -1;
+ }
+}
+
+unsigned int platform_get_family(void)
+{
+ return platform_family;
+}
+EXPORT_SYMBOL(platform_get_family);
+
+/*
+ * \brief usb_eye_configure() for optimizing the USB eye on Calliope.
+ *
+ * \param unsigned int value saved to the register.
+ *
+ * \return none
+ *
+ */
+static void __init usb_eye_configure(unsigned int value)
+{
+ asic_write(asic_read(crt_spare) | value, crt_spare);
+}
+
+/*
+ * platform_get_asic - determine the ASIC type.
+ *
+ * \param none
+ *
+ * \return ASIC type; ASIC_UNKNOWN if none
+ *
+ */
+enum asic_type platform_get_asic(void)
+{
+ return asic;
+}
+EXPORT_SYMBOL(platform_get_asic);
+
+/*
+ * platform_configure_usb - usb configuration based on platform type.
+ * @bcm1_usb2_ctl: value for the BCM1_USB2_CTL register, which is
+ * quirky
+ */
+static void __init platform_configure_usb(void)
+{
+ u32 bcm1_usb2_ctl;
+
+ if (usb_configured)
+ return;
+
+ switch (asic) {
+ case ASIC_ZEUS:
+ fs_update(0x0000, 0x11, 0x02, 0);
+ bcm1_usb2_ctl = 0x803;
+ break;
+
+ case ASIC_CRONUS:
+ case ASIC_CRONUSLITE:
+ fs_update(0x0000, 0x11, 0x02, 0);
+ bcm1_usb2_ctl = 0x803;
+ break;
+
+ case ASIC_CALLIOPE:
+ fs_update(0x0000, 0x11, 0x02, 1);
+
+ switch (platform_family) {
+ case FAMILY_1500VZE:
+ break;
+
+ case FAMILY_1500VZF:
+ usb_eye_configure(0x003c0000);
+ break;
+
+ default:
+ usb_eye_configure(0x00300000);
+ break;
+ }
+
+ bcm1_usb2_ctl = 0x803;
+ break;
+
+ default:
+ pr_err("Unknown ASIC type: %d\n", asic);
+ break;
+ }
+
+ /* turn on USB power */
+ asic_write(0, usb2_strap);
+ /* Enable all OHCI interrupts */
+ asic_write(bcm1_usb2_ctl, usb2_control);
+ /* USB2_STBUS_OBC store32/load32 */
+ asic_write(3, usb2_stbus_obc);
+ /* USB2_STBUS_MESS_SIZE 2 packets */
+ asic_write(1, usb2_stbus_mess_size);
+ /* USB2_STBUS_CHUNK_SIZE 2 packets */
+ asic_write(1, usb2_stbus_chunk_size);
+
+ usb_configured = true;
+}
+
+/*
+ * Set up the USB EHCI interface
+ */
+void platform_configure_usb_ehci()
+{
+ platform_configure_usb();
+}
+
+/*
+ * Set up the USB OHCI interface
+ */
+void platform_configure_usb_ohci()
+{
+ platform_configure_usb();
+}
+
+/*
+ * Shut the USB EHCI interface down--currently a NOP
+ */
+void platform_unconfigure_usb_ehci()
+{
+}
+
+/*
+ * Shut the USB OHCI interface down--currently a NOP
+ */
+void platform_unconfigure_usb_ohci()
+{
+}
+
+/**
+ * configure_platform - configuration based on platform type.
+ */
+void __init configure_platform(void)
+{
+ platform_set_family();
+
+ switch (platform_family) {
+ case FAMILY_1500:
+ case FAMILY_1500VZE:
+ case FAMILY_1500VZF:
+ platform_features = FFS_CAPABLE;
+ asic = ASIC_CALLIOPE;
+ asic_phy_base = CALLIOPE_IO_BASE;
+ register_map = &calliope_register_map;
+ asic_base = (unsigned long)ioremap_nocache(asic_phy_base,
+ ASIC_IO_SIZE);
+
+ if (platform_family == FAMILY_1500VZE) {
+ gp_resources = non_dvr_vze_calliope_resources;
+ pr_info("Platform: 1500/Vz Class E - "
+ "CALLIOPE, NON_DVR_CAPABLE\n");
+ } else if (platform_family == FAMILY_1500VZF) {
+ gp_resources = non_dvr_vzf_calliope_resources;
+ pr_info("Platform: 1500/Vz Class F - "
+ "CALLIOPE, NON_DVR_CAPABLE\n");
+ } else {
+ gp_resources = non_dvr_calliope_resources;
+ pr_info("Platform: 1500/RNG100 - CALLIOPE, "
+ "NON_DVR_CAPABLE\n");
+ }
+ break;
+
+ case FAMILY_4500:
+ platform_features = FFS_CAPABLE | PCIE_CAPABLE |
+ DISPLAY_CAPABLE;
+ asic = ASIC_ZEUS;
+ asic_phy_base = ZEUS_IO_BASE;
+ register_map = &zeus_register_map;
+ asic_base = (unsigned long)ioremap_nocache(asic_phy_base,
+ ASIC_IO_SIZE);
+ gp_resources = non_dvr_zeus_resources;
+
+ pr_info("Platform: 4500 - ZEUS, NON_DVR_CAPABLE\n");
+ break;
+
+ case FAMILY_4600:
+ {
+ unsigned int chipversion = 0;
+
+ /* The settop has PCIE but it isn't used, so don't advertise
+ * it*/
+ platform_features = FFS_CAPABLE | DISPLAY_CAPABLE;
+ asic_phy_base = CRONUS_IO_BASE; /* same as Cronus */
+ register_map = &cronus_register_map; /* same as Cronus */
+ asic_base = (unsigned long)ioremap_nocache(asic_phy_base,
+ ASIC_IO_SIZE);
+ gp_resources = non_dvr_cronuslite_resources;
+
+ /* ASIC version will determine if this is a real CronusLite or
+ * Castrati(Cronus) */
+ chipversion = asic_read(chipver3) << 24;
+ chipversion |= asic_read(chipver2) << 16;
+ chipversion |= asic_read(chipver1) << 8;
+ chipversion |= asic_read(chipver0);
+
+ if ((chipversion == CRONUS_10) || (chipversion == CRONUS_11))
+ asic = ASIC_CRONUS;
+ else
+ asic = ASIC_CRONUSLITE;
+
+ pr_info("Platform: 4600 - %s, NON_DVR_CAPABLE, "
+ "chipversion=0x%08X\n",
+ (asic == ASIC_CRONUS) ? "CRONUS" : "CRONUS LITE",
+ chipversion);
+ break;
+ }
+ case FAMILY_4600VZA:
+ platform_features = FFS_CAPABLE | DISPLAY_CAPABLE;
+ asic = ASIC_CRONUS;
+ asic_phy_base = CRONUS_IO_BASE;
+ register_map = &cronus_register_map;
+ asic_base = (unsigned long)ioremap_nocache(asic_phy_base,
+ ASIC_IO_SIZE);
+ gp_resources = non_dvr_cronus_resources;
+
+ pr_info("Platform: Vz Class A - CRONUS, NON_DVR_CAPABLE\n");
+ break;
+
+ case FAMILY_8500:
+ case FAMILY_8500RNG:
+ platform_features = DVR_CAPABLE | PCIE_CAPABLE |
+ DISPLAY_CAPABLE;
+ asic = ASIC_ZEUS;
+ asic_phy_base = ZEUS_IO_BASE;
+ register_map = &zeus_register_map;
+ asic_base = (unsigned long)ioremap_nocache(asic_phy_base,
+ ASIC_IO_SIZE);
+ gp_resources = dvr_zeus_resources;
+
+ pr_info("Platform: 8500/RNG200 - ZEUS, DVR_CAPABLE\n");
+ break;
+
+ case FAMILY_8600:
+ case FAMILY_8600VZB:
+ platform_features = DVR_CAPABLE | PCIE_CAPABLE |
+ DISPLAY_CAPABLE;
+ asic = ASIC_CRONUS;
+ asic_phy_base = CRONUS_IO_BASE;
+ register_map = &cronus_register_map;
+ asic_base = (unsigned long)ioremap_nocache(asic_phy_base,
+ ASIC_IO_SIZE);
+ gp_resources = dvr_cronus_resources;
+
+ pr_info("Platform: 8600/Vz Class B - CRONUS, "
+ "DVR_CAPABLE\n");
+ break;
+
+ default:
+ pr_crit("Platform: UNKNOWN PLATFORM\n");
+ break;
+ }
+
+ switch (asic) {
+ case ASIC_ZEUS:
+ phys_to_bus_offset = 0x30000000;
+ break;
+ case ASIC_CALLIOPE:
+ phys_to_bus_offset = 0x10000000;
+ break;
+ case ASIC_CRONUSLITE:
+ /* Fall through */
+ case ASIC_CRONUS:
+ /*
+ * TODO: We suppose 0x10000000 aliases into 0x20000000-
+ * 0x2XXXXXXX. If 0x10000000 aliases into 0x60000000-
+ * 0x6XXXXXXX, the offset should be 0x50000000, not 0x10000000.
+ */
+ phys_to_bus_offset = 0x10000000;
+ break;
+ default:
+ phys_to_bus_offset = 0x00000000;
+ break;
+ }
+}
+
+/**
+ * platform_devices_init - sets up USB device resourse.
+ */
+static int __init platform_devices_init(void)
+{
+ pr_notice("%s: ----- Initializing USB resources -----\n", __func__);
+
+ asic_resource.start = asic_phy_base;
+ asic_resource.end += asic_resource.start;
+
+ ehci_resources[0].start = asic_reg_phys_addr(ehci_hcapbase);
+ ehci_resources[0].end += ehci_resources[0].start;
+
+ ohci_resources[0].start = asic_reg_phys_addr(ohci_hc_revision);
+ ohci_resources[0].end += ohci_resources[0].start;
+
+ set_io_port_base(0);
+
+ platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+
+ return 0;
+}
+
+arch_initcall(platform_devices_init);
+
+/*
+ *
+ * BOOTMEM ALLOCATION
+ *
+ */
+/*
+ * Allocates/reserves the Platform memory resources early in the boot process.
+ * This ignores any resources that are designated IORESOURCE_IO
+ */
+void __init platform_alloc_bootmem(void)
+{
+ int i;
+ int total = 0;
+
+ /* Get persistent memory data from command line before allocating
+ * resources. This need to happen before normal command line parsing
+ * has been done */
+ pmem_setup_resource();
+
+ /* Loop through looking for resources that want a particular address */
+ for (i = 0; gp_resources[i].flags != 0; i++) {
+ int size = gp_resources[i].end - gp_resources[i].start + 1;
+ if ((gp_resources[i].start != 0) &&
+ ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) {
+ reserve_bootmem(bus_to_phys(gp_resources[i].start),
+ size, 0);
+ total += gp_resources[i].end -
+ gp_resources[i].start + 1;
+ pr_info("reserve resource %s at %08x (%u bytes)\n",
+ gp_resources[i].name, gp_resources[i].start,
+ gp_resources[i].end -
+ gp_resources[i].start + 1);
+ }
+ }
+
+ /* Loop through assigning addresses for those that are left */
+ for (i = 0; gp_resources[i].flags != 0; i++) {
+ int size = gp_resources[i].end - gp_resources[i].start + 1;
+ if ((gp_resources[i].start == 0) &&
+ ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) {
+ void *mem = alloc_bootmem_pages(size);
+
+ if (mem == NULL)
+ pr_err("Unable to allocate bootmem pages "
+ "for %s\n", gp_resources[i].name);
+
+ else {
+ gp_resources[i].start =
+ phys_to_bus(virt_to_phys(mem));
+ gp_resources[i].end =
+ gp_resources[i].start + size - 1;
+ total += size;
+ pr_info("allocate resource %s at %08x "
+ "(%u bytes)\n",
+ gp_resources[i].name,
+ gp_resources[i].start, size);
+ }
+ }
+ }
+
+ pr_info("Total Platform driver memory allocation: 0x%08x\n", total);
+
+ /* indicate resources that are platform I/O related */
+ for (i = 0; gp_resources[i].flags != 0; i++) {
+ if ((gp_resources[i].start != 0) &&
+ ((gp_resources[i].flags & IORESOURCE_IO) != 0)) {
+ pr_info("reserved platform resource %s at %08x\n",
+ gp_resources[i].name, gp_resources[i].start);
+ }
+ }
+}
+
+/*
+ *
+ * PERSISTENT MEMORY (PMEM) CONFIGURATION
+ *
+ */
+static unsigned long pmemaddr __initdata;
+
+static int __init early_param_pmemaddr(char *p)
+{
+ pmemaddr = (unsigned long)simple_strtoul(p, NULL, 0);
+ return 0;
+}
+early_param("pmemaddr", early_param_pmemaddr);
+
+static long pmemlen __initdata;
+
+static int __init early_param_pmemlen(char *p)
+{
+/* TODO: we can use this code when and if the bootloader ever changes this */
+#if 0
+ pmemlen = (unsigned long)simple_strtoul(p, NULL, 0);
+#else
+ pmemlen = 0x20000;
+#endif
+ return 0;
+}
+early_param("pmemlen", early_param_pmemlen);
+
+/*
+ * Set up persistent memory. If we were given values, we patch the array of
+ * resources. Otherwise, persistent memory may be allocated anywhere at all.
+ */
+static void __init pmem_setup_resource(void)
+{
+ struct resource *resource;
+ resource = asic_resource_get("DiagPersistentMemory");
+
+ if (resource && pmemaddr && pmemlen) {
+ /* The address provided by bootloader is in kseg0. Convert to
+ * a bus address. */
+ resource->start = phys_to_bus(pmemaddr - 0x80000000);
+ resource->end = resource->start + pmemlen - 1;
+
+ pr_info("persistent memory: start=0x%x end=0x%x\n",
+ resource->start, resource->end);
+ }
+}
+
+/*
+ *
+ * RESOURCE ACCESS FUNCTIONS
+ *
+ */
+
+/**
+ * asic_resource_get - retrieves parameters for a platform resource.
+ * @name: string to match resource
+ *
+ * Returns a pointer to a struct resource corresponding to the given name.
+ *
+ * CANNOT BE NAMED platform_resource_get, which would be the obvious choice,
+ * as this function name is already declared
+ */
+struct resource *asic_resource_get(const char *name)
+{
+ int i;
+
+ for (i = 0; gp_resources[i].flags != 0; i++) {
+ if (strcmp(gp_resources[i].name, name) == 0)
+ return &gp_resources[i];
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(asic_resource_get);
+
+/**
+ * platform_release_memory - release pre-allocated memory
+ * @ptr: pointer to memory to release
+ * @size: size of resource
+ *
+ * This must only be called for memory allocated or reserved via the boot
+ * memory allocator.
+ */
+void platform_release_memory(void *ptr, int size)
+{
+ unsigned long addr;
+ unsigned long end;
+
+ addr = ((unsigned long)ptr + (PAGE_SIZE - 1)) & PAGE_MASK;
+ end = ((unsigned long)ptr + size) & PAGE_MASK;
+
+ for (; addr < end; addr += PAGE_SIZE) {
+ ClearPageReserved(virt_to_page(__va(addr)));
+ init_page_count(virt_to_page(__va(addr)));
+ free_page((unsigned long)__va(addr));
+ }
+}
+EXPORT_SYMBOL(platform_release_memory);
+
+/*
+ *
+ * FEATURE AVAILABILITY FUNCTIONS
+ *
+ */
+int platform_supports_dvr(void)
+{
+ return (platform_features & DVR_CAPABLE) != 0;
+}
+
+int platform_supports_ffs(void)
+{
+ return (platform_features & FFS_CAPABLE) != 0;
+}
+
+int platform_supports_pcie(void)
+{
+ return (platform_features & PCIE_CAPABLE) != 0;
+}
+
+int platform_supports_display(void)
+{
+ return (platform_features & DISPLAY_CAPABLE) != 0;
+}
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