x86: sandbox: pch: Add a CONFIG option for PCH

[oweals/u-boot.git] / drivers / ram / bmips_ram.c

diff --git a/drivers/ram/bmips_ram.c b/drivers/ram/bmips_ram.c
index 7efcc8fe7a8baa335a6a73572d4e9f724a4c1539..3e1dd9e24101300b017866b61e07e18c07b92a2d 100644 (file)
--- a/drivers/ram/bmips_ram.c
+++ b/drivers/ram/bmips_ram.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
  *
  * Derived from linux/arch/mips/bcm63xx/cpu.c:
  *     Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
  *     Copyright (C) 2009 Florian Fainelli <florian@openwrt.org>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -23,6 +22,8 @@
 #define SDRAM_CFG_32B_MASK     (1 << SDRAM_CFG_32B_SHIFT)
 #define SDRAM_CFG_BANK_SHIFT   13
 #define SDRAM_CFG_BANK_MASK    (1 << SDRAM_CFG_BANK_SHIFT)
+#define SDRAM_6318_SPACE_SHIFT 4
+#define SDRAM_6318_SPACE_MASK  (0xf << SDRAM_6318_SPACE_SHIFT)
 
 #define MEMC_CFG_REG           0x4
 #define MEMC_CFG_32B_SHIFT     1
@@ -42,9 +43,20 @@ struct bmips_ram_hw {
 
 struct bmips_ram_priv {
        void __iomem *regs;
+       u32 force_size;
        const struct bmips_ram_hw *hw;
 };
 
+static ulong bcm6318_get_ram_size(struct bmips_ram_priv *priv)
+{
+       u32 val;
+
+       val = readl_be(priv->regs + SDRAM_CFG_REG);
+       val = (val & SDRAM_6318_SPACE_MASK) >> SDRAM_6318_SPACE_SHIFT;
+
+       return (1 << (val + 20));
+}
+
 static ulong bcm6328_get_ram_size(struct bmips_ram_priv *priv)
 {
        return readl_be(priv->regs + DDR_CSEND_REG) << 24;
@@ -93,7 +105,10 @@ static int bmips_ram_get_info(struct udevice *dev, struct ram_info *info)
        const struct bmips_ram_hw *hw = priv->hw;
 
        info->base = 0x80000000;
-       info->size = hw->get_ram_size(priv);
+       if (priv->force_size)
+               info->size = priv->force_size;
+       else
+               info->size = hw->get_ram_size(priv);
 
        return 0;
 }
@@ -102,6 +117,10 @@ static const struct ram_ops bmips_ram_ops = {
        .get_info = bmips_ram_get_info,
 };
 
+static const struct bmips_ram_hw bmips_ram_bcm6318 = {
+       .get_ram_size = bcm6318_get_ram_size,
+};
+
 static const struct bmips_ram_hw bmips_ram_bcm6328 = {
        .get_ram_size = bcm6328_get_ram_size,
 };
@@ -116,6 +135,9 @@ static const struct bmips_ram_hw bmips_ram_bcm6358 = {
 
 static const struct udevice_id bmips_ram_ids[] = {
        {
+               .compatible = "brcm,bcm6318-mc",
+               .data = (ulong)&bmips_ram_bcm6318,
+       }, {
                .compatible = "brcm,bcm6328-mc",
                .data = (ulong)&bmips_ram_bcm6328,
        }, {
@@ -132,14 +154,13 @@ static int bmips_ram_probe(struct udevice *dev)
        struct bmips_ram_priv *priv = dev_get_priv(dev);
        const struct bmips_ram_hw *hw =
                (const struct bmips_ram_hw *)dev_get_driver_data(dev);
-       fdt_addr_t addr;
-       fdt_size_t size;
 
-       addr = dev_get_addr_size_index(dev, 0, &size);
-       if (addr == FDT_ADDR_T_NONE)
+       priv->regs = dev_remap_addr(dev);
+       if (!priv->regs)
                return -EINVAL;
 
-       priv->regs = ioremap(addr, size);
+       dev_read_u32(dev, "force-size", &priv->force_size);
+
        priv->hw = hw;
 
        return 0;
@@ -152,5 +173,4 @@ U_BOOT_DRIVER(bmips_ram) = {
        .probe = bmips_ram_probe,
        .priv_auto_alloc_size = sizeof(struct bmips_ram_priv),
        .ops = &bmips_ram_ops,
-       .flags = DM_FLAG_PRE_RELOC,
 };