diff options
author | Pawel Moll <pawel.moll@arm.com> | 2011-12-09 18:47:39 +0000 |
---|---|---|
committer | Pawel Moll <pawel.moll@arm.com> | 2012-02-24 09:18:20 +0000 |
commit | 6a3719562b69ffdfc36e829e19b35fda6ab19ca6 (patch) | |
tree | 0eb75a57e5f7b54d51d14c315f15cbc1433e2ee7 /arch/arm/mach-vexpress | |
parent | 8deed1786a6479d0ccda51226582920ab1d6976c (diff) |
ARM: vexpress: Motherboard RS1 memory map support
This patch adds support for RS1 memory map based Versatile Express
motherboard.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Diffstat (limited to 'arch/arm/mach-vexpress')
-rw-r--r-- | arch/arm/mach-vexpress/include/mach/debug-macro.S | 30 | ||||
-rw-r--r-- | arch/arm/mach-vexpress/include/mach/uncompress.h | 22 | ||||
-rw-r--r-- | arch/arm/mach-vexpress/v2m.c | 62 |
3 files changed, 108 insertions, 6 deletions
diff --git a/arch/arm/mach-vexpress/include/mach/debug-macro.S b/arch/arm/mach-vexpress/include/mach/debug-macro.S index fd9e6c7ea49..fa8224794e0 100644 --- a/arch/arm/mach-vexpress/include/mach/debug-macro.S +++ b/arch/arm/mach-vexpress/include/mach/debug-macro.S @@ -10,12 +10,34 @@ * published by the Free Software Foundation. */ -#define DEBUG_LL_UART_OFFSET 0x00009000 +#define DEBUG_LL_PHYS_BASE 0x10000000 +#define DEBUG_LL_UART_OFFSET 0x00009000 + +#define DEBUG_LL_PHYS_BASE_RS1 0x1c000000 +#define DEBUG_LL_UART_OFFSET_RS1 0x00090000 + +#define DEBUG_LL_VIRT_BASE 0xf8000000 .macro addruart,rp,rv,tmp - mov \rp, #DEBUG_LL_UART_OFFSET - orr \rv, \rp, #0xf8000000 @ virtual base - orr \rp, \rp, #0x10000000 @ physical base + + @ Make an educated guess regarding the memory map: + @ - the original A9 core tile, which has MPCore peripherals + @ located at 0x1e000000, should use UART at 0x10009000 + @ - all other (RS1 complaint) tiles use UART mapped + @ at 0x1c090000 + mrc p15, 4, \tmp, c15, c0, 0 + cmp \tmp, #0x1e000000 + + @ Original memory map + moveq \rp, #DEBUG_LL_UART_OFFSET + orreq \rv, \rp, #DEBUG_LL_VIRT_BASE + orreq \rp, \rp, #DEBUG_LL_PHYS_BASE + + @ RS1 memory map + movne \rp, #DEBUG_LL_UART_OFFSET_RS1 + orrne \rv, \rp, #DEBUG_LL_VIRT_BASE + orrne \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1 + .endm #include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mach-vexpress/include/mach/uncompress.h b/arch/arm/mach-vexpress/include/mach/uncompress.h index 7972c5748d0..7dab5596b86 100644 --- a/arch/arm/mach-vexpress/include/mach/uncompress.h +++ b/arch/arm/mach-vexpress/include/mach/uncompress.h @@ -22,7 +22,27 @@ #define AMBA_UART_CR(base) (*(volatile unsigned char *)((base) + 0x30)) #define AMBA_UART_FR(base) (*(volatile unsigned char *)((base) + 0x18)) -#define get_uart_base() (0x10000000 + 0x00009000) +#define UART_BASE 0x10009000 +#define UART_BASE_RS1 0x1c090000 + +static unsigned long get_uart_base(void) +{ + unsigned long mpcore_periph; + + /* + * Make an educated guess regarding the memory map: + * - the original A9 core tile, which has MPCore peripherals + * located at 0x1e000000, should use UART at 0x10009000 + * - all other (RS1 complaint) tiles use UART mapped + * at 0x1c090000 + */ + asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (mpcore_periph)); + + if (mpcore_periph == 0x1e000000) + return UART_BASE; + else + return UART_BASE_RS1; +} /* * This does not append a newline diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c index dbf05510300..9cab5417e5d 100644 --- a/arch/arm/mach-vexpress/v2m.c +++ b/arch/arm/mach-vexpress/v2m.c @@ -486,9 +486,36 @@ MACHINE_END #if defined(CONFIG_ARCH_VEXPRESS_DT) +static struct map_desc v2m_rs1_io_desc __initdata = { + .virtual = V2M_PERIPH, + .pfn = __phys_to_pfn(0x1c000000), + .length = SZ_2M, + .type = MT_DEVICE, +}; + +static int __init v2m_dt_scan_memory_map(unsigned long node, const char *uname, + int depth, void *data) +{ + const char **map = data; + + if (strcmp(uname, "motherboard") != 0) + return 0; + + *map = of_get_flat_dt_prop(node, "arm,v2m-memory-map", NULL); + + return 1; +} + void __init v2m_dt_map_io(void) { - iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc)); + const char *map = NULL; + + of_scan_flat_dt(v2m_dt_scan_memory_map, &map); + + if (map && strcmp(map, "rs1") == 0) + iotable_init(&v2m_rs1_io_desc, 1); + else + iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc)); #if defined(CONFIG_SMP) vexpress_dt_smp_map_io(); @@ -535,6 +562,35 @@ static struct clk_lookup v2m_dt_lookups[] = { .dev_id = "1001f000.clcd", .clk = &osc1_clk, }, + /* RS1 memory map */ + { /* PL180 MMCI */ + .dev_id = "mb:mmci", /* 1c050000.mmci */ + .clk = &osc2_clk, + }, { /* PL050 KMI0 */ + .dev_id = "1c060000.kmi", + .clk = &osc2_clk, + }, { /* PL050 KMI1 */ + .dev_id = "1c070000.kmi", + .clk = &osc2_clk, + }, { /* PL011 UART0 */ + .dev_id = "1c090000.uart", + .clk = &osc2_clk, + }, { /* PL011 UART1 */ + .dev_id = "1c0a0000.uart", + .clk = &osc2_clk, + }, { /* PL011 UART2 */ + .dev_id = "1c0b0000.uart", + .clk = &osc2_clk, + }, { /* PL011 UART3 */ + .dev_id = "1c0c0000.uart", + .clk = &osc2_clk, + }, { /* SP805 WDT */ + .dev_id = "1c0f0000.wdt", + .clk = &v2m_ref_clk, + }, { /* PL111 CLCD */ + .dev_id = "1c1f0000.clcd", + .clk = &osc1_clk, + }, }; void __init v2m_dt_init_early(void) @@ -597,6 +653,10 @@ static struct of_dev_auxdata v2m_dt_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("arm,vexpress-flash", V2M_NOR0, "physmap-flash", &v2m_flash_data), OF_DEV_AUXDATA("arm,primecell", V2M_MMCI, "mb:mmci", &v2m_mmci_data), + /* RS1 memory map */ + OF_DEV_AUXDATA("arm,vexpress-flash", 0x08000000, "physmap-flash", + &v2m_flash_data), + OF_DEV_AUXDATA("arm,primecell", 0x1c050000, "mb:mmci", &v2m_mmci_data), {} }; |