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author | Lennert Buytenhek <buytenh@wantstofly.org> | 2009-02-20 02:31:35 +0100 |
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committer | Nicolas Pitre <nico@cam.org> | 2009-02-19 22:36:42 -0500 |
commit | cfdeb6376e439c58c2d37de492d2a8c763621022 (patch) | |
tree | 19243c67ec6411797028cbe538ea88410516049d /arch/arm/mach-mv78xx0 | |
parent | 12f4815b425b26a610e5dd9a5a5e02872f0f52c5 (diff) | |
download | kernel_samsung_smdk4412-cfdeb6376e439c58c2d37de492d2a8c763621022.zip kernel_samsung_smdk4412-cfdeb6376e439c58c2d37de492d2a8c763621022.tar.gz kernel_samsung_smdk4412-cfdeb6376e439c58c2d37de492d2a8c763621022.tar.bz2 |
[ARM] mv78xx0: distinguish between different chip steppings
During boot, identify which chip stepping we're running on (determined
by looking at the first PCIe unit's device ID and revision registers),
and print a message with the details about what we found.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Diffstat (limited to 'arch/arm/mach-mv78xx0')
-rw-r--r-- | arch/arm/mach-mv78xx0/common.c | 29 | ||||
-rw-r--r-- | arch/arm/mach-mv78xx0/common.h | 2 | ||||
-rw-r--r-- | arch/arm/mach-mv78xx0/include/mach/mv78xx0.h | 12 | ||||
-rw-r--r-- | arch/arm/mach-mv78xx0/pcie.c | 6 |
4 files changed, 48 insertions, 1 deletions
diff --git a/arch/arm/mach-mv78xx0/common.c b/arch/arm/mach-mv78xx0/common.c index b0e4e0d..538f8f4 100644 --- a/arch/arm/mach-mv78xx0/common.c +++ b/arch/arm/mach-mv78xx0/common.c @@ -719,6 +719,32 @@ struct sys_timer mv78xx0_timer = { /***************************************************************************** * General ****************************************************************************/ +static char * __init mv78xx0_id(void) +{ + u32 dev, rev; + + mv78xx0_pcie_id(&dev, &rev); + + if (dev == MV78X00_Z0_DEV_ID) { + if (rev == MV78X00_REV_Z0) + return "MV78X00-Z0"; + else + return "MV78X00-Rev-Unsupported"; + } else if (dev == MV78100_DEV_ID) { + if (rev == MV78100_REV_A0) + return "MV78100-A0"; + else + return "MV78100-Rev-Unsupported"; + } else if (dev == MV78200_DEV_ID) { + if (rev == MV78100_REV_A0) + return "MV78200-A0"; + else + return "MV78200-Rev-Unsupported"; + } else { + return "Device-Unknown"; + } +} + static int __init is_l2_writethrough(void) { return !!(readl(CPU_CONTROL) & L2_WRITETHROUGH); @@ -737,7 +763,8 @@ void __init mv78xx0_init(void) get_pclk_l2clk(hclk, core_index, &pclk, &l2clk); tclk = get_tclk(); - printk(KERN_INFO "MV78xx0 core #%d, ", core_index); + printk(KERN_INFO "%s ", mv78xx0_id()); + printk("core #%d, ", core_index); printk("PCLK = %dMHz, ", (pclk + 499999) / 1000000); printk("L2 = %dMHz, ", (l2clk + 499999) / 1000000); printk("HCLK = %dMHz, ", (hclk + 499999) / 1000000); diff --git a/arch/arm/mach-mv78xx0/common.h b/arch/arm/mach-mv78xx0/common.h index 78af5de..f6274db 100644 --- a/arch/arm/mach-mv78xx0/common.h +++ b/arch/arm/mach-mv78xx0/common.h @@ -29,6 +29,8 @@ void mv78xx0_setup_pcie_io_win(int window, u32 base, u32 size, void mv78xx0_setup_pcie_mem_win(int window, u32 base, u32 size, int maj, int min); +void mv78xx0_pcie_id(u32 *dev, u32 *rev); + void mv78xx0_ehci0_init(void); void mv78xx0_ehci1_init(void); void mv78xx0_ehci2_init(void); diff --git a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h index e930ea5..328a02e 100644 --- a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h +++ b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h @@ -80,6 +80,18 @@ #define TIMER_VIRT_BASE (BRIDGE_VIRT_BASE | 0x0300) /* + * Supported devices and revisions. + */ +#define MV78X00_Z0_DEV_ID 0x6381 +#define MV78X00_REV_Z0 1 + +#define MV78100_DEV_ID 0x7810 +#define MV78100_REV_A0 1 + +#define MV78200_DEV_ID 0x7820 +#define MV78200_REV_A0 1 + +/* * Register Map */ #define DDR_VIRT_BASE (MV78XX0_REGS_VIRT_BASE | 0x00000) diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c index aad3a7a..a560439 100644 --- a/arch/arm/mach-mv78xx0/pcie.c +++ b/arch/arm/mach-mv78xx0/pcie.c @@ -33,6 +33,12 @@ static struct resource pcie_io_space; static struct resource pcie_mem_space; +void __init mv78xx0_pcie_id(u32 *dev, u32 *rev) +{ + *dev = orion_pcie_dev_id((void __iomem *)PCIE00_VIRT_BASE); + *rev = orion_pcie_rev((void __iomem *)PCIE00_VIRT_BASE); +} + static void __init mv78xx0_pcie_preinit(void) { int i; |