diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/kirkwood/dram.c | 58 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-kirkwood/cpu.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-kirkwood/mpp.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-orion5x/cpu.h | 1 |
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); |