Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / ddr / fsl / mpc85xx_ddr_gen1.c

diff --git a/qemu/roms/u-boot/drivers/ddr/fsl/mpc85xx_ddr_gen1.c b/qemu/roms/u-boot/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
new file mode 100644 (file)
index 0000000..8dd4a91
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * Version 2 as published by the Free Software Foundation.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <fsl_ddr_sdram.h>
+
+#if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
+#error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
+#endif
+
+void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
+                            unsigned int ctrl_num, int step)
+{
+       unsigned int i;
+       struct ccsr_ddr __iomem *ddr =
+               (struct ccsr_ddr __iomem *)CONFIG_SYS_FSL_DDR_ADDR;
+
+       if (ctrl_num != 0) {
+               printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
+               return;
+       }
+
+       for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+               if (i == 0) {
+                       out_be32(&ddr->cs0_bnds, regs->cs[i].bnds);
+                       out_be32(&ddr->cs0_config, regs->cs[i].config);
+
+               } else if (i == 1) {
+                       out_be32(&ddr->cs1_bnds, regs->cs[i].bnds);
+                       out_be32(&ddr->cs1_config, regs->cs[i].config);
+
+               } else if (i == 2) {
+                       out_be32(&ddr->cs2_bnds, regs->cs[i].bnds);
+                       out_be32(&ddr->cs2_config, regs->cs[i].config);
+
+               } else if (i == 3) {
+                       out_be32(&ddr->cs3_bnds, regs->cs[i].bnds);
+                       out_be32(&ddr->cs3_config, regs->cs[i].config);
+               }
+       }
+
+       out_be32(&ddr->timing_cfg_1, regs->timing_cfg_1);
+       out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2);
+       out_be32(&ddr->sdram_mode, regs->ddr_sdram_mode);
+       out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval);
+#if defined(CONFIG_MPC8555) || defined(CONFIG_MPC8541)
+       out_be32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
+#endif
+
+       /*
+        * 200 painful micro-seconds must elapse between
+        * the DDR clock setup and the DDR config enable.
+        */
+       udelay(200);
+       asm volatile("sync;isync");
+
+       out_be32(&ddr->sdram_cfg, regs->ddr_sdram_cfg);
+
+       asm("sync;isync;msync");
+       udelay(500);
+}
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
+/*
+ * Initialize all of memory for ECC, then enable errors.
+ */
+
+void
+ddr_enable_ecc(unsigned int dram_size)
+{
+       struct ccsr_ddr __iomem *ddr =
+               (struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_DDR_ADDR);
+
+       dma_meminit(CONFIG_MEM_INIT_VALUE, dram_size);
+
+       /*
+        * Enable errors for ECC.
+        */
+       debug("DMA DDR: err_disable = 0x%08x\n", ddr->err_disable);
+       ddr->err_disable = 0x00000000;
+       asm("sync;isync;msync");
+       debug("DMA DDR: err_disable = 0x%08x\n", ddr->err_disable);
+}
+
+#endif /* CONFIG_DDR_ECC  && ! CONFIG_ECC_INIT_VIA_DDRCONTROLLER */