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-rw-r--r--arch/arm/cpu/arm926ejs/kirkwood/dram.c58
-rw-r--r--arch/arm/include/asm/arch-kirkwood/cpu.h2
-rw-r--r--arch/arm/include/asm/arch-kirkwood/mpp.h2
-rw-r--r--arch/arm/include/asm/arch-orion5x/cpu.h1
4 files changed, 54 insertions, 9 deletions
diff --git a/arch/arm/cpu/arm926ejs/kirkwood/dram.c b/arch/arm/cpu/arm926ejs/kirkwood/dram.c
index 181b3e7..807894f 100644
--- a/arch/arm/cpu/arm926ejs/kirkwood/dram.c
+++ b/arch/arm/cpu/arm926ejs/kirkwood/dram.c
@@ -30,38 +30,84 @@
DECLARE_GLOBAL_DATA_PTR;
-#define KW_REG_CPUCS_WIN_BAR(x) (KW_REGISTER(0x1500) + (x * 0x08))
-#define KW_REG_CPUCS_WIN_SZ(x) (KW_REGISTER(0x1504) + (x * 0x08))
+struct kw_sdram_bank {
+ u32 win_bar;
+ u32 win_sz;
+};
+
+struct kw_sdram_addr_dec {
+ struct kw_sdram_bank sdram_bank[4];
+};
+
+#define KW_REG_CPUCS_WIN_ENABLE (1 << 0)
+#define KW_REG_CPUCS_WIN_WR_PROTECT (1 << 1)
+#define KW_REG_CPUCS_WIN_WIN0_CS(x) (((x) & 0x3) << 2)
+#define KW_REG_CPUCS_WIN_SIZE(x) (((x) & 0xff) << 24)
+
/*
* kw_sdram_bar - reads SDRAM Base Address Register
*/
u32 kw_sdram_bar(enum memory_bank bank)
{
+ struct kw_sdram_addr_dec *base =
+ (struct kw_sdram_addr_dec *)KW_REGISTER(0x1500);
u32 result = 0;
- u32 enable = 0x01 & readl(KW_REG_CPUCS_WIN_SZ(bank));
+ u32 enable = 0x01 & readl(&base->sdram_bank[bank].win_sz);
if ((!enable) || (bank > BANK3))
return 0;
- result = readl(KW_REG_CPUCS_WIN_BAR(bank));
+ result = readl(&base->sdram_bank[bank].win_bar);
return result;
}
/*
+ * kw_sdram_bs_set - writes SDRAM Bank size
+ */
+static void kw_sdram_bs_set(enum memory_bank bank, u32 size)
+{
+ struct kw_sdram_addr_dec *base =
+ (struct kw_sdram_addr_dec *)KW_REGISTER(0x1500);
+ /* Read current register value */
+ u32 reg = readl(&base->sdram_bank[bank].win_sz);
+
+ /* Clear window size */
+ reg &= ~KW_REG_CPUCS_WIN_SIZE(0xFF);
+
+ /* Set new window size */
+ reg |= KW_REG_CPUCS_WIN_SIZE((size - 1) >> 24);
+
+ writel(reg, &base->sdram_bank[bank].win_sz);
+}
+
+/*
* kw_sdram_bs - reads SDRAM Bank size
*/
u32 kw_sdram_bs(enum memory_bank bank)
{
+ struct kw_sdram_addr_dec *base =
+ (struct kw_sdram_addr_dec *)KW_REGISTER(0x1500);
u32 result = 0;
- u32 enable = 0x01 & readl(KW_REG_CPUCS_WIN_SZ(bank));
+ u32 enable = 0x01 & readl(&base->sdram_bank[bank].win_sz);
if ((!enable) || (bank > BANK3))
return 0;
- result = 0xff000000 & readl(KW_REG_CPUCS_WIN_SZ(bank));
+ result = 0xff000000 & readl(&base->sdram_bank[bank].win_sz);
result += 0x01000000;
return result;
}
+void kw_sdram_size_adjust(enum memory_bank bank)
+{
+ u32 size;
+
+ /* probe currently equipped RAM size */
+ size = get_ram_size((void *)kw_sdram_bar(bank), kw_sdram_bs(bank));
+
+ /* adjust SDRAM window size accordingly */
+ kw_sdram_bs_set(bank, size);
+}
+
#ifndef CONFIG_SYS_BOARD_DRAM_INIT
int dram_init(void)
{
diff --git a/arch/arm/include/asm/arch-kirkwood/cpu.h b/arch/arm/include/asm/arch-kirkwood/cpu.h
index d28c51a..57bfe8e 100644
--- a/arch/arm/include/asm/arch-kirkwood/cpu.h
+++ b/arch/arm/include/asm/arch-kirkwood/cpu.h
@@ -155,10 +155,10 @@ struct kwgpio_registers {
/*
* functions
*/
-void reset_cpu(unsigned long ignored);
unsigned char get_random_hex(void);
unsigned int kw_sdram_bar(enum memory_bank bank);
unsigned int kw_sdram_bs(enum memory_bank bank);
+void kw_sdram_size_adjust(enum memory_bank bank);
int kw_config_adr_windows(void);
void kw_config_gpio(unsigned int gpp0_oe_val, unsigned int gpp1_oe_val,
unsigned int gpp0_oe, unsigned int gpp1_oe);
diff --git a/arch/arm/include/asm/arch-kirkwood/mpp.h b/arch/arm/include/asm/arch-kirkwood/mpp.h
index 8e50ee7..8ceea7b 100644
--- a/arch/arm/include/asm/arch-kirkwood/mpp.h
+++ b/arch/arm/include/asm/arch-kirkwood/mpp.h
@@ -85,7 +85,7 @@
#define MPP7_SPI_SCn MPP( 7, 0x2, 0, 1, 1, 1, 1, 1 )
#define MPP7_PTP_TRIG_GEN MPP( 7, 0x3, 0, 1, 1, 1, 1, 1 )
-#define MPP8_GPIO MPP( 8, 0x0, 1, 1, 1, 1, 1, 1 )
+#define MPP8_GPIO MPP( 8, 0x0, 1, 1, 1, 1, 1, 1 )
#define MPP8_TW_SDA MPP( 8, 0x1, 1, 1, 1, 1, 1, 1 )
#define MPP8_UART0_RTS MPP( 8, 0x2, 0, 1, 1, 1, 1, 1 )
#define MPP8_UART1_RTS MPP( 8, 0x3, 0, 1, 1, 1, 1, 1 )
diff --git a/arch/arm/include/asm/arch-orion5x/cpu.h b/arch/arm/include/asm/arch-orion5x/cpu.h
index 2f52ca8..17b9b69 100644
--- a/arch/arm/include/asm/arch-orion5x/cpu.h
+++ b/arch/arm/include/asm/arch-orion5x/cpu.h
@@ -251,7 +251,6 @@ struct orion5x_ddr_addr_decode_registers {
/*
* functions
*/
-void reset_cpu(unsigned long ignored);
u32 orion5x_device_id(void);
u32 orion5x_device_rev(void);
unsigned int orion5x_winctrl_calcsize(unsigned int sizeval);