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-rw-r--r--board/sc520_cdp/sc520_cdp.c453
1 files changed, 389 insertions, 64 deletions
diff --git a/board/sc520_cdp/sc520_cdp.c b/board/sc520_cdp/sc520_cdp.c
index 2809ff72a..50a49e601 100644
--- a/board/sc520_cdp/sc520_cdp.c
+++ b/board/sc520_cdp/sc520_cdp.c
@@ -1,4 +1,5 @@
/*
+ *
* (C) Copyright 2002
* Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
*
@@ -24,109 +25,162 @@
#include <common.h>
#include <pci.h>
#include <asm/io.h>
+#include <asm/pci.h>
#include <asm/ic/sc520.h>
#include <asm/ic/ali512x.h>
+#include <ssi.h>
+
+#undef SC520_CDP_DEBUG
+
+#ifdef SC520_CDP_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
/* ------------------------------------------------------------------------- */
+
+/*
+ * Theory:
+ * We first set up all IRQs to be non-pci, edge triggered,
+ * when we later enumerate the pci bus and pci_sc520_fixup_irq() gets
+ * called we reallocate irqs to the pci bus with sc520_pci_set_irq()
+ * as needed. Whe choose the irqs to gram from a configurable list
+ * inside pci_sc520_fixup_irq() (If this list contains stupid irq's
+ * such as 0 thngas will not work)
+ */
+
static void irq_init(void)
{
-
/* disable global interrupt mode */
write_mmcr_byte(SC520_PICICR, 0x40);
- /* set irq0-7 to edge */
+ /* set all irqs to edge */
write_mmcr_byte(SC520_MPICMODE, 0x00);
-
- /* set irq9-12 to level, all the other (8, 13-15) are edge */
- write_mmcr_byte(SC520_SL1PICMODE, 0x1e);
-
- /* set irq16-24 (unused slave pic2) to level */
- write_mmcr_byte(SC520_SL2PICMODE, 0xff);
+ write_mmcr_byte(SC520_SL1PICMODE, 0x00);
+ write_mmcr_byte(SC520_SL2PICMODE, 0x00);
/* active low polarity on PIC interrupt pins,
- active high polarity on all other irq pins */
- write_mmcr_word(SC520_INTPINPOL, 0);
+ * active high polarity on all other irq pins */
+ write_mmcr_word(SC520_INTPINPOL, 0x0000);
/* set irq number mapping */
- write_mmcr_byte(SC520_GPTMR0MAP,0); /* disable GP timer 0 INT */
- write_mmcr_byte(SC520_GPTMR1MAP,0); /* disable GP timer 1 INT */
- write_mmcr_byte(SC520_GPTMR2MAP,0); /* disable GP timer 2 INT */
- write_mmcr_byte(SC520_PIT0MAP,0x1); /* Set PIT timer 0 INT to IRQ0 */
- write_mmcr_byte(SC520_PIT1MAP,0); /* diable PIT timer 1 INT */
- write_mmcr_byte(SC520_PIT2MAP,0); /* diable PIT timer 2 INT */
- write_mmcr_byte(SC520_PCIINTAMAP,0x4); /* Set PCI INT A to IRQ9 */
- write_mmcr_byte(SC520_PCIINTBMAP,0x5); /* Set PCI INT B to IRQ10 */
- write_mmcr_byte(SC520_PCIINTCMAP,0x6); /* Set PCI INT C to IRQ11 */
- write_mmcr_byte(SC520_PCIINTDMAP,0x7); /* Set PCI INT D to IRQ12 */
- write_mmcr_byte(SC520_DMABCINTMAP,0); /* disable DMA INT */
- write_mmcr_byte(SC520_SSIMAP,0); /* disable Synchronius serial INT */
- write_mmcr_byte(SC520_WDTMAP,0); /* disable Watchdor INT */
- write_mmcr_byte(SC520_RTCMAP,0x3); /* Set RTC int to 8 */
- write_mmcr_byte(SC520_WPVMAP,0); /* disable write protect INT */
- write_mmcr_byte(SC520_ICEMAP,0x2); /* Set ICE Debug Serielport INT to IRQ1 */
- write_mmcr_byte(SC520_FERRMAP,0x8); /* Set FP error INT to IRQ13 */
- write_mmcr_byte(SC520_GP0IMAP,6); /* Set GPIRQ0 (ISA IRQ2) to IRQ9 */
- write_mmcr_byte(SC520_GP1IMAP,2); /* Set GPIRQ1 (SIO IRQ1) to IRQ1 */
- write_mmcr_byte(SC520_GP2IMAP,7); /* Set GPIRQ2 (ISA IRQ12) to IRQ12 */
+ write_mmcr_byte(SC520_GPTMR0MAP, SC520_IRQ_DISABLED); /* disable GP timer 0 INT */
+ write_mmcr_byte(SC520_GPTMR1MAP, SC520_IRQ_DISABLED); /* disable GP timer 1 INT */
+ write_mmcr_byte(SC520_GPTMR2MAP, SC520_IRQ_DISABLED); /* disable GP timer 2 INT */
+ write_mmcr_byte(SC520_PIT0MAP, SC520_IRQ0); /* Set PIT timer 0 INT to IRQ0 */
+ write_mmcr_byte(SC520_PIT1MAP, SC520_IRQ_DISABLED); /* disable PIT timer 1 INT */
+ write_mmcr_byte(SC520_PIT2MAP, SC520_IRQ_DISABLED); /* disable PIT timer 2 INT */
+ write_mmcr_byte(SC520_PCIINTAMAP, SC520_IRQ_DISABLED); /* disable PCI INT A */
+ write_mmcr_byte(SC520_PCIINTBMAP, SC520_IRQ_DISABLED); /* disable PCI INT B */
+ write_mmcr_byte(SC520_PCIINTCMAP, SC520_IRQ_DISABLED); /* disable PCI INT C */
+ write_mmcr_byte(SC520_PCIINTDMAP, SC520_IRQ_DISABLED); /* disable PCI INT D */
+ write_mmcr_byte(SC520_DMABCINTMAP, SC520_IRQ_DISABLED); /* disable DMA INT */
+ write_mmcr_byte(SC520_SSIMAP, SC520_IRQ_DISABLED); /* disable Synchronius serial INT */
+ write_mmcr_byte(SC520_WDTMAP, SC520_IRQ_DISABLED); /* disable Watchdog INT */
+ write_mmcr_byte(SC520_RTCMAP, SC520_IRQ8); /* Set RTC int to 8 */
+ write_mmcr_byte(SC520_WPVMAP, SC520_IRQ_DISABLED); /* disable write protect INT */
+ write_mmcr_byte(SC520_ICEMAP, SC520_IRQ1); /* Set ICE Debug Serielport INT to IRQ1 */
+ write_mmcr_byte(SC520_FERRMAP,SC520_IRQ13); /* Set FP error INT to IRQ13 */
if (CFG_USE_SIO_UART) {
- write_mmcr_byte(SC520_UART1MAP,0); /* disable internal UART1 INT */
- write_mmcr_byte(SC520_UART2MAP,0); /* disable internal UART2 INT */
- write_mmcr_byte(SC520_GP3IMAP,11); /* Set GPIRQ3 (ISA IRQ3) to IRQ3 */
- write_mmcr_byte(SC520_GP4IMAP,12); /* Set GPIRQ4 (ISA IRQ4) to IRQ4 */
+ write_mmcr_byte(SC520_UART1MAP, SC520_IRQ_DISABLED); /* disable internal UART1 INT */
+ write_mmcr_byte(SC520_UART2MAP, SC520_IRQ_DISABLED); /* disable internal UART2 INT */
+ write_mmcr_byte(SC520_GP3IMAP, SC520_IRQ3); /* Set GPIRQ3 (ISA IRQ3) to IRQ3 */
+ write_mmcr_byte(SC520_GP4IMAP, SC520_IRQ4); /* Set GPIRQ4 (ISA IRQ4) to IRQ4 */
} else {
- write_mmcr_byte(SC520_UART1MAP,12); /* Set internal UART2 INT to IRQ4 */
- write_mmcr_byte(SC520_UART2MAP,11); /* Set internal UART2 INT to IRQ3 */
- write_mmcr_byte(SC520_GP3IMAP,0); /* disable GPIRQ3 (ISA IRQ3) */
- write_mmcr_byte(SC520_GP4IMAP,0); /* disable GPIRQ4 (ISA IRQ4) */
+ write_mmcr_byte(SC520_UART1MAP, SC520_IRQ4); /* Set internal UART2 INT to IRQ4 */
+ write_mmcr_byte(SC520_UART2MAP, SC520_IRQ3); /* Set internal UART2 INT to IRQ3 */
+ write_mmcr_byte(SC520_GP3IMAP, SC520_IRQ_DISABLED); /* disable GPIRQ3 (ISA IRQ3) */
+ write_mmcr_byte(SC520_GP4IMAP, SC520_IRQ_DISABLED); /* disable GPIRQ4 (ISA IRQ4) */
}
- write_mmcr_byte(SC520_GP5IMAP,13); /* Set GPIRQ5 (ISA IRQ5) to IRQ5 */
- write_mmcr_byte(SC520_GP6IMAP,21); /* Set GPIRQ6 (ISA IRQ6) to IRQ6 */
- write_mmcr_byte(SC520_GP7IMAP,22); /* Set GPIRQ7 (ISA IRQ7) to IRQ7 */
- write_mmcr_byte(SC520_GP8IMAP,3); /* Set GPIRQ8 (SIO IRQ8) to IRQ8 */
- write_mmcr_byte(SC520_GP9IMAP,4); /* Set GPIRQ9 (ISA IRQ9) to IRQ9 */
- write_mmcr_byte(SC520_GP10IMAP,9); /* Set GPIRQ10 (ISA IRQ10) to IRQ10 */
- write_mmcr_word(SC520_PCIHOSTMAP,0x11f); /* Map PCI hostbridge INT to NMI */
- write_mmcr_word(SC520_ECCMAP,0x100); /* Map SDRAM ECC failure INT to NMI */
+ write_mmcr_byte(SC520_GP1IMAP, SC520_IRQ1); /* Set GPIRQ1 (SIO IRQ1) to IRQ1 */
+ write_mmcr_byte(SC520_GP5IMAP, SC520_IRQ5); /* Set GPIRQ5 (ISA IRQ5) to IRQ5 */
+ write_mmcr_byte(SC520_GP6IMAP, SC520_IRQ6); /* Set GPIRQ6 (ISA IRQ6) to IRQ6 */
+ write_mmcr_byte(SC520_GP7IMAP, SC520_IRQ7); /* Set GPIRQ7 (ISA IRQ7) to IRQ7 */
+ write_mmcr_byte(SC520_GP8IMAP, SC520_IRQ8); /* Set GPIRQ8 (SIO IRQ8) to IRQ8 */
+ write_mmcr_byte(SC520_GP9IMAP, SC520_IRQ9); /* Set GPIRQ9 (ISA IRQ2) to IRQ9 */
+ write_mmcr_byte(SC520_GP0IMAP, SC520_IRQ11); /* Set GPIRQ0 (ISA IRQ11) to IRQ10 */
+ write_mmcr_byte(SC520_GP2IMAP, SC520_IRQ12); /* Set GPIRQ2 (ISA IRQ12) to IRQ12 */
+ write_mmcr_byte(SC520_GP10IMAP,SC520_IRQ14); /* Set GPIRQ10 (ISA IRQ14) to IRQ14 */
+
+ write_mmcr_word(SC520_PCIHOSTMAP, 0x11f); /* Map PCI hostbridge INT to NMI */
+ write_mmcr_word(SC520_ECCMAP, 0x100); /* Map SDRAM ECC failure INT to NMI */
}
+
/* PCI stuff */
static void pci_sc520_cdp_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
{
- char pin;
- int irq;
+ /* a configurable lists of irqs to steal
+ * when we need one (a board with more pci interrupt pins
+ * would use a larger table */
+ static int irq_list[] = {
+ CFG_FIRST_PCI_IRQ,
+ CFG_SECOND_PCI_IRQ,
+ CFG_THIRD_PCI_IRQ,
+ CFG_FORTH_PCI_IRQ
+ };
+ static int next_irq_index=0;
+ char tmp_pin;
+ int pin;
- pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &pin);
- irq = pin-1;
+ pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &tmp_pin);
+ pin = tmp_pin;
+ pin-=1; /* pci config space use 1-based numbering */
+ if (-1 == pin) {
+ return; /* device use no irq */
+ }
+
+
+
+ /* map device number + pin to a pin on the sc520 */
switch (PCI_DEV(dev)) {
case 20:
+ pin+=SC520_PCI_INTA;
break;
+
case 19:
- irq+=1;
+ pin+=SC520_PCI_INTB;
break;
+
case 18:
- irq+=2;
+ pin+=SC520_PCI_INTC;
break;
+
case 17:
- irq+=3;
+ pin+=SC520_PCI_INTD;
break;
+
default:
return;
}
- irq&=3; /* wrap around */
- irq+=9; /* lowest IRQ is 9 */
+ pin&=3; /* wrap around */
- pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, irq);
-#if 0
- printf("fixup_irq: device %d pin %c irq %d\n",
- PCI_DEV(dev), 'A' + pin -1, irq);
-#endif
+ if (sc520_pci_ints[pin] == -1) {
+ /* re-route one interrupt for us */
+ if (next_irq_index > 3) {
+ return;
+ }
+ if (pci_sc520_set_irq(pin, irq_list[next_irq_index])) {
+ return;
+ }
+ next_irq_index++;
+ }
+
+
+ if (-1 != sc520_pci_ints[pin]) {
+ pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE,
+ sc520_pci_ints[pin]);
+ }
+ PRINTF("fixup_irq: device %d pin %c irq %d\n",
+ PCI_DEV(dev), 'A' + pin, sc520_pci_ints[pin]);
}
static struct pci_controller sc520_cdp_hose = {
@@ -162,8 +216,8 @@ void setup_ali_sio(int uart_primary)
/* SSI chip select pins */
ali512x_cio_function(14, 0, 0, 0); /* SSI_CS */
- ali512x_cio_function(15, 0, 0, 0); /* SSI_MV */
- ali512x_cio_function(16, 0, 1, 0); /* SSI_SPI# (inverted) */
+ ali512x_cio_function(15, 0, 0, 0); /* SSI_MV */
+ ali512x_cio_function(16, 0, 0, 0); /* SSI_SPI# */
/* Board REV pins */
ali512x_cio_function(20, 0, 0, 1);
@@ -202,6 +256,7 @@ static void bus_init(void)
* we need to map 1G-128k - 1G (0x38000000 - 0x3fffffff) to CS1 */
+
/* SRAM = GPCS3 128k @ d0000-effff*/
write_mmcr_long(SC520_PAR2, 0x4e00400d);
@@ -219,13 +274,15 @@ static void bus_init(void)
/* 680 LEDS */
write_mmcr_long(SC520_PAR15, 0x30000640);
+ write_mmcr_byte(SC520_ADDDECCTL, 0);
+
asm ("wbinvd\n"); /* Flush cache, req. after setting the unchached attribute ona PAR */
if (CFG_USE_SIO_UART) {
write_mmcr_byte(SC520_ADDDECCTL, read_mmcr_byte(SC520_ADDDECCTL) | UART2_DIS|UART1_DIS);
setup_ali_sio(1);
} else {
- write_mmcr_byte(SC520_ADDDECCTL, read_mmcr_byte(SC520_ADDDECCTL) & ~(UART2_DIS|UART1_DIS));
+ write_mmcr_byte(SC520_ADDDECCTL, read_mmcr_byte(SC520_ADDDECCTL) & ~(UART2_DIS|UART1_DIS));
setup_ali_sio(0);
silence_uart(0x3e8);
silence_uart(0x2e8);
@@ -233,7 +290,192 @@ static void bus_init(void)
}
+/* GPCS usage
+ * GPCS0 PIO27 (NMI)
+ * GPCS1 ROMCS1
+ * GPCS2 ROMCS2
+ * GPCS3 SRAMCS PAR2
+ * GPCS4 unused PAR3
+ * GPCS5 unused PAR4
+ * GPCS6 IDE
+ * GPCS7 IDE
+ */
+
+
+/* par usage:
+ * PAR0 legacy_video
+ * PAR1 PCI ROM mapping
+ * PAR2 SRAM
+ * PAR3 IDE
+ * PAR4 IDE
+ * PAR5 legacy_video
+ * PAR6 legacy_video
+ * PAR7 legacy_video
+ * PAR8 legacy_video
+ * PAR9 legacy_video
+ * PAR10 legacy_video
+ * PAR11 ISAROM
+ * PAR12 BOOTCS
+ * PAR13 ROMCS1
+ * PAR14 ROMCS2
+ * PAR15 Port 0x680 LED display
+ */
+
+/*
+ * This function should map a chunk of size bytes
+ * of the system address space to the ISA bus
+ *
+ * The function will return the memory address
+ * as seen by the host (which may very will be the
+ * same as the bus address)
+ */
+u32 isa_map_rom(u32 bus_addr, int size)
+{
+ u32 par;
+
+ PRINTF("isa_map_rom asked to map %d bytes at %x\n",
+ size, bus_addr);
+
+ par = size;
+ if (par < 0x80000) {
+ par = 0x80000;
+ }
+ par >>= 12;
+ par--;
+ par&=0x7f;
+ par <<= 18;
+ par |= (bus_addr>>12);
+ par |= 0x50000000;
+
+ PRINTF ("setting PAR11 to %x\n", par);
+
+ /* Map rom 0x10000 with PAR1 */
+ write_mmcr_long(SC520_PAR11, par);
+
+ return bus_addr;
+}
+
+/*
+ * this function removed any mapping created
+ * with pci_get_rom_window()
+ */
+void isa_unmap_rom(u32 addr)
+{
+ PRINTF("isa_unmap_rom asked to unmap %x", addr);
+ if ((addr>>12) == (read_mmcr_long(SC520_PAR11)&0x3ffff)) {
+ write_mmcr_long(SC520_PAR11, 0);
+ PRINTF(" done\n");
+ return;
+ }
+ PRINTF(" not ours\n");
+}
+
+#ifdef CONFIG_PCI
+#define PCI_ROM_TEMP_SPACE 0x10000
+/*
+ * This function should map a chunk of size bytes
+ * of the system address space to the PCI bus,
+ * suitable to map PCI ROMS (bus address < 16M)
+ * the function will return the host memory address
+ * which should be converted into a bus address
+ * before used to configure the PCI rom address
+ * decoder
+ */
+u32 pci_get_rom_window(struct pci_controller *hose, int size)
+{
+ u32 par;
+
+ par = size;
+ if (par < 0x80000) {
+ par = 0x80000;
+ }
+ par >>= 16;
+ par--;
+ par&=0x7ff;
+ par <<= 14;
+ par |= (PCI_ROM_TEMP_SPACE>>16);
+ par |= 0x72000000;
+
+ PRINTF ("setting PAR1 to %x\n", par);
+
+ /* Map rom 0x10000 with PAR1 */
+ write_mmcr_long(SC520_PAR1, par);
+
+ return PCI_ROM_TEMP_SPACE;
+}
+
+/*
+ * this function removed any mapping created
+ * with pci_get_rom_window()
+ */
+void pci_remove_rom_window(struct pci_controller *hose, u32 addr)
+{
+ PRINTF("pci_remove_rom_window: %x", addr);
+ if (addr == PCI_ROM_TEMP_SPACE) {
+ write_mmcr_long(SC520_PAR1, 0);
+ PRINTF(" done\n");
+ return;
+ }
+ PRINTF(" not ours\n");
+
+}
+
+/*
+ * This function is called in order to provide acces to the
+ * legacy video I/O ports on the PCI bus.
+ * After this function accesses to I/O ports 0x3b0-0x3bb and
+ * 0x3c0-0x3df shuld result in transactions on the PCI bus.
+ *
+ */
+int pci_enable_legacy_video_ports(struct pci_controller *hose)
+{
+ /* Map video memory to 0xa0000*/
+ write_mmcr_long(SC520_PAR0, 0x7200400a);
+
+ /* forward all I/O accesses to PCI */
+ write_mmcr_byte(SC520_ADDDECCTL,
+ read_mmcr_byte(SC520_ADDDECCTL) | IO_HOLE_DEST_PCI);
+
+
+ /* so we map away all io ports to pci (only way to access pci io
+ * below 0x400. But then we have to map back the portions that we dont
+ * use so that the generate cycles on the GPIO bus where the sio and
+ * ISA slots are connected, this requre the use of several PAR registers
+ */
+
+ /* bring 0x100 - 0x1ef back to ISA using PAR5 */
+ write_mmcr_long(SC520_PAR5, 0x30ef0100);
+
+ /* IDE use 1f0-1f7 */
+
+ /* bring 0x1f8 - 0x2f7 back to ISA using PAR6 */
+ write_mmcr_long(SC520_PAR6, 0x30ff01f8);
+
+ /* com2 use 2f8-2ff */
+
+ /* bring 0x300 - 0x3af back to ISA using PAR7 */
+ write_mmcr_long(SC520_PAR7, 0x30af0300);
+
+ /* vga use 3b0-3bb */
+
+ /* bring 0x3bc - 0x3bf back to ISA using PAR8 */
+ write_mmcr_long(SC520_PAR8, 0x300303bc);
+
+ /* vga use 3c0-3df */
+
+ /* bring 0x3e0 - 0x3f5 back to ISA using PAR9 */
+ write_mmcr_long(SC520_PAR9, 0x301503e0);
+
+ /* ide use 3f6 */
+
+ /* bring 0x3f7 back to ISA using PAR10 */
+ write_mmcr_long(SC520_PAR10, 0x300003f7);
+
+ /* com1 use 3f8-3ff */
+ return 0;
+}
+#endif
/*
* Miscelaneous platform dependent initialisations
@@ -252,7 +494,6 @@ int board_init(void)
/* enter debug mode after next reset (only if jumper is also set) */
write_mmcr_byte(SC520_RESCFG, 0x08);
-
/* configure the software timer to 33.333MHz */
write_mmcr_byte(SC520_SWTMRCFG, 0);
gd->bus_clk = 33333000;
@@ -288,3 +529,87 @@ int last_stage_init(void)
return 0;
}
+
+
+
+void ssi_chip_select(int dev)
+{
+
+ /* Spunk board: SPI EEPROM is active-low, MW EEPROM and AUX are active high */
+ switch (dev) {
+ case 1: /* SPI EEPROM */
+ ali512x_cio_out(16, 0);
+ break;
+
+ case 2: /* MW EEPROM */
+ ali512x_cio_out(15, 1);
+ break;
+
+ case 3: /* AUX */
+ ali512x_cio_out(14, 1);
+ break;
+
+ case 0:
+ ali512x_cio_out(16, 1);
+ ali512x_cio_out(15, 0);
+ ali512x_cio_out(14, 0);
+ break;
+
+ default:
+ printf("Illegal SSI device requested: %d\n", dev);
+ }
+}
+
+
+void spi_init_f(void)
+{
+#ifdef CONFIG_SC520_CDP_USE_SPI
+ spi_eeprom_probe(1);
+#endif
+#ifdef CONFIG_SC520_CDP_USE_MW
+ mw_eeprom_probe(2);
+#endif
+}
+
+ssize_t spi_read(uchar *addr, int alen, uchar *buffer, int len)
+{
+ int offset;
+ int i;
+ ssize_t res;
+
+ offset = 0;
+ for (i=0;i<alen;i++) {
+ offset <<= 8;
+ offset |= addr[i];
+ }
+
+#ifdef CONFIG_SC520_CDP_USE_SPI
+ res = spi_eeprom_read(1, offset, buffer, len);
+#endif
+#ifdef CONFIG_SC520_CDP_USE_MW
+ res = mw_eeprom_read(2, offset, buffer, len);
+#endif
+ return res;
+}
+
+ssize_t spi_write(uchar *addr, int alen, uchar *buffer, int len)
+{
+ int offset;
+ int i;
+ ssize_t res;
+
+ offset = 0;
+ for (i=0;i<alen;i++) {
+ offset <<= 8;
+ offset |= addr[i];
+ }
+
+#ifdef CONFIG_SC520_CDP_USE_SPI
+ res = spi_eeprom_write(1, offset, buffer, len);
+#endif
+#ifdef CONFIG_SC520_CDP_USE_MW
+ res = mw_eeprom_write(2, offset, buffer, len);
+#endif
+ return res;
+}
+
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