Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / armv7 / am33xx / mem.c

diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/am33xx/mem.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/am33xx/mem.c
new file mode 100644 (file)
index 0000000..56c9e7d
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/am33xx/mem.c
@@ -0,0 +1,98 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *     Mansoor Ahamed <mansoor.ahamed@ti.com>
+ *
+ * Initial Code from:
+ *     Manikandan Pillai <mani.pillai@ti.com>
+ *     Richard Woodruff <r-woodruff2@ti.com>
+ *     Syed Mohammed Khasim <khasim@ti.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/sys_proto.h>
+#include <command.h>
+
+struct gpmc *gpmc_cfg;
+
+
+void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
+                       u32 size)
+{
+       writel(0, &cs->config7);
+       sdelay(1000);
+       /* Delay for settling */
+       writel(gpmc_config[0], &cs->config1);
+       writel(gpmc_config[1], &cs->config2);
+       writel(gpmc_config[2], &cs->config3);
+       writel(gpmc_config[3], &cs->config4);
+       writel(gpmc_config[4], &cs->config5);
+       writel(gpmc_config[5], &cs->config6);
+       /* Enable the config */
+       writel((((size & 0xF) << 8) | ((base >> 24) & 0x3F) |
+               (1 << 6)), &cs->config7);
+       sdelay(2000);
+}
+
+/*****************************************************
+ * gpmc_init(): init gpmc bus
+ * Init GPMC for x16, MuxMode (SDRAM in x32).
+ * This code can only be executed from SRAM or SDRAM.
+ *****************************************************/
+void gpmc_init(void)
+{
+       /* putting a blanket check on GPMC based on ZeBu for now */
+       gpmc_cfg = (struct gpmc *)GPMC_BASE;
+#if defined(CONFIG_NOR)
+/* configure GPMC for NOR */
+       const u32 gpmc_regs[GPMC_MAX_REG] = {   STNOR_GPMC_CONFIG1,
+                                               STNOR_GPMC_CONFIG2,
+                                               STNOR_GPMC_CONFIG3,
+                                               STNOR_GPMC_CONFIG4,
+                                               STNOR_GPMC_CONFIG5,
+                                               STNOR_GPMC_CONFIG6,
+                                               STNOR_GPMC_CONFIG7
+                                               };
+       u32 size = GPMC_SIZE_16M;
+       u32 base = CONFIG_SYS_FLASH_BASE;
+#elif defined(CONFIG_NAND)
+/* configure GPMC for NAND */
+       const u32  gpmc_regs[GPMC_MAX_REG] = {  M_NAND_GPMC_CONFIG1,
+                                               M_NAND_GPMC_CONFIG2,
+                                               M_NAND_GPMC_CONFIG3,
+                                               M_NAND_GPMC_CONFIG4,
+                                               M_NAND_GPMC_CONFIG5,
+                                               M_NAND_GPMC_CONFIG6,
+                                               0
+                                               };
+       u32 size = GPMC_SIZE_256M;
+       u32 base = CONFIG_SYS_NAND_BASE;
+#else
+       const u32 gpmc_regs[GPMC_MAX_REG] = { 0, 0, 0, 0, 0, 0, 0 };
+       u32 size = 0;
+       u32 base = 0;
+#endif
+       /* global settings */
+       writel(0x00000008, &gpmc_cfg->sysconfig);
+       writel(0x00000000, &gpmc_cfg->irqstatus);
+       writel(0x00000000, &gpmc_cfg->irqenable);
+#ifdef CONFIG_NOR
+       writel(0x00000200, &gpmc_cfg->config);
+#else
+       writel(0x00000012, &gpmc_cfg->config);
+#endif
+       /*
+        * Disable the GPMC0 config set by ROM code
+        */
+       writel(0, &gpmc_cfg->cs[0].config7);
+       sdelay(1000);
+       /* enable chip-select specific configurations */
+       enable_gpmc_cs_config(gpmc_regs, &gpmc_cfg->cs[0], base, size);
+}