Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / arm926ejs / spear / spear600.c

diff --git a/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/spear/spear600.c b/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/spear/spear600.c
new file mode 100644 (file)
index 0000000..6474e9d
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/spear/spear600.c
@@ -0,0 +1,217 @@
+/*
+ * (C) Copyright 2000-2009
+ * Viresh Kumar, ST Microelectronics, viresh.kumar@st.com
+ * Vipin Kumar, ST Microelectronics, vipin.kumar@st.com
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/arch/spr_misc.h>
+#include <asm/arch/spr_defs.h>
+
+static void sel_1v8(void)
+{
+       struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+       u32 ddr1v8, ddr2v5;
+
+       ddr2v5 = readl(&misc_p->ddr_2v5_compensation);
+       ddr2v5 &= 0x8080ffc0;
+       ddr2v5 |= 0x78000003;
+       writel(ddr2v5, &misc_p->ddr_2v5_compensation);
+
+       ddr1v8 = readl(&misc_p->ddr_1v8_compensation);
+       ddr1v8 &= 0x8080ffc0;
+       ddr1v8 |= 0x78000010;
+       writel(ddr1v8, &misc_p->ddr_1v8_compensation);
+
+       while (!(readl(&misc_p->ddr_1v8_compensation) & DDR_COMP_ACCURATE))
+               ;
+}
+
+static void sel_2v5(void)
+{
+       struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+       u32 ddr1v8, ddr2v5;
+
+       ddr1v8 = readl(&misc_p->ddr_1v8_compensation);
+       ddr1v8 &= 0x8080ffc0;
+       ddr1v8 |= 0x78000003;
+       writel(ddr1v8, &misc_p->ddr_1v8_compensation);
+
+       ddr2v5 = readl(&misc_p->ddr_2v5_compensation);
+       ddr2v5 &= 0x8080ffc0;
+       ddr2v5 |= 0x78000010;
+       writel(ddr2v5, &misc_p->ddr_2v5_compensation);
+
+       while (!(readl(&misc_p->ddr_2v5_compensation) & DDR_COMP_ACCURATE))
+               ;
+}
+
+/*
+ * plat_ddr_init:
+ */
+void plat_ddr_init(void)
+{
+       struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+       u32 ddrpad;
+       u32 core3v3, ddr1v8, ddr2v5;
+
+       /* DDR pad register configurations */
+       ddrpad = readl(&misc_p->ddr_pad);
+       ddrpad &= ~DDR_PAD_CNF_MSK;
+
+#if (CONFIG_DDR_HCLK)
+       ddrpad |= 0xEAAB;
+#elif (CONFIG_DDR_2HCLK)
+       ddrpad |= 0xEAAD;
+#elif (CONFIG_DDR_PLL2)
+       ddrpad |= 0xEAAD;
+#endif
+       writel(ddrpad, &misc_p->ddr_pad);
+
+       /* Compensation register configurations */
+       core3v3 = readl(&misc_p->core_3v3_compensation);
+       core3v3 &= 0x8080ffe0;
+       core3v3 |= 0x78000002;
+       writel(core3v3, &misc_p->core_3v3_compensation);
+
+       ddr1v8 = readl(&misc_p->ddr_1v8_compensation);
+       ddr1v8 &= 0x8080ffc0;
+       ddr1v8 |= 0x78000004;
+       writel(ddr1v8, &misc_p->ddr_1v8_compensation);
+
+       ddr2v5 = readl(&misc_p->ddr_2v5_compensation);
+       ddr2v5 &= 0x8080ffc0;
+       ddr2v5 |= 0x78000004;
+       writel(ddr2v5, &misc_p->ddr_2v5_compensation);
+
+       if ((readl(&misc_p->ddr_pad) & DDR_PAD_SW_CONF) == DDR_PAD_SW_CONF) {
+               /* Software memory configuration */
+               if (readl(&misc_p->ddr_pad) & DDR_PAD_SSTL_SEL)
+                       sel_1v8();
+               else
+                       sel_2v5();
+       } else {
+               /* Hardware memory configuration */
+               if (readl(&misc_p->ddr_pad) & DDR_PAD_DRAM_TYPE)
+                       sel_1v8();
+               else
+                       sel_2v5();
+       }
+}
+
+/*
+ * soc_init:
+ */
+void soc_init(void)
+{
+       /* Nothing to be done for SPEAr600 */
+}
+
+/*
+ * xxx_boot_selected:
+ *
+ * return true if the particular booting option is selected
+ * return false otherwise
+ */
+static u32 read_bootstrap(void)
+{
+       return (readl(CONFIG_SPEAR_BOOTSTRAPCFG) >> CONFIG_SPEAR_BOOTSTRAPSHFT)
+               & CONFIG_SPEAR_BOOTSTRAPMASK;
+}
+
+int snor_boot_selected(void)
+{
+       u32 bootstrap = read_bootstrap();
+
+       if (SNOR_BOOT_SUPPORTED) {
+               /* Check whether SNOR boot is selected */
+               if ((bootstrap & CONFIG_SPEAR_ONLYSNORBOOT) ==
+                       CONFIG_SPEAR_ONLYSNORBOOT)
+                       return true;
+
+               if ((bootstrap & CONFIG_SPEAR_NORNANDBOOT) ==
+                       CONFIG_SPEAR_NORNAND8BOOT)
+                       return true;
+
+               if ((bootstrap & CONFIG_SPEAR_NORNANDBOOT) ==
+                       CONFIG_SPEAR_NORNAND16BOOT)
+                       return true;
+       }
+
+       return false;
+}
+
+int nand_boot_selected(void)
+{
+       u32 bootstrap = read_bootstrap();
+
+       if (NAND_BOOT_SUPPORTED) {
+               /* Check whether NAND boot is selected */
+               if ((bootstrap & CONFIG_SPEAR_NORNANDBOOT) ==
+                       CONFIG_SPEAR_NORNAND8BOOT)
+                       return true;
+
+               if ((bootstrap & CONFIG_SPEAR_NORNANDBOOT) ==
+                       CONFIG_SPEAR_NORNAND16BOOT)
+                       return true;
+       }
+
+       return false;
+}
+
+int pnor_boot_selected(void)
+{
+       /* Parallel NOR boot is not selected in any SPEAr600 revision */
+       return false;
+}
+
+int usb_boot_selected(void)
+{
+       u32 bootstrap = read_bootstrap();
+
+       if (USB_BOOT_SUPPORTED) {
+               /* Check whether USB boot is selected */
+               if (!(bootstrap & CONFIG_SPEAR_USBBOOT))
+                       return true;
+       }
+
+       return false;
+}
+
+int tftp_boot_selected(void)
+{
+       /* TFTP boot is not selected in any SPEAr600 revision */
+       return false;
+}
+
+int uart_boot_selected(void)
+{
+       /* UART boot is not selected in any SPEAr600 revision */
+       return false;
+}
+
+int spi_boot_selected(void)
+{
+       /* SPI boot is not selected in any SPEAr600 revision */
+       return false;
+}
+
+int i2c_boot_selected(void)
+{
+       /* I2C boot is not selected in any SPEAr600 revision */
+       return false;
+}
+
+int mmc_boot_selected(void)
+{
+       return false;
+}
+
+void plat_late_init(void)
+{
+       spear_late_init();
+}