On Tue, Jun 09, 2009 at 01:22:04PM +0200, Konrad Eisele wrote:
> From 6452f2ae1e76df7593175c73bd5248dbcbf5d212 Mon Sep 17 00:00:00 2001
> From: Konrad Eisele <konrad@xxxxxxxxxxx>
> Date: Tue, 9 Jun 2009 12:57:32 +0200
> Subject: [PATCH 3/7] Introduce the sparc-leon CPU type. Add sparc_leon enum,
> M_LEON|M_LEON3_SOC machine. Add compilation of leon.c
> in mm and kernel if CONFIG_LEON is defined. Add sparc_leon
> dependent initialization to switch statements + head.S.
>
> Signed-off-by: Konrad Eisele <konrad@xxxxxxxxxxx>
> ---
> arch/sparc/include/asm/machines.h | 6 +++++-
> arch/sparc/include/asm/system_32.h | 1 +
> arch/sparc/kernel/Makefile | 2 ++
> arch/sparc/kernel/cpu.c | 5 +++++
> arch/sparc/kernel/head_32.S | 8 ++++++++
> arch/sparc/kernel/idprom.c | 2 ++
> arch/sparc/kernel/irq_32.c | 5 +++++
> arch/sparc/kernel/setup_32.c | 5 +++++
> arch/sparc/mm/Makefile | 1 +
> arch/sparc/mm/init_32.c | 1 +
> arch/sparc/mm/loadmmu.c | 1 +
> 11 files changed, 36 insertions(+), 1 deletions(-)
>
> diff --git a/arch/sparc/include/asm/machines.h
> b/arch/sparc/include/asm/machines.h
> index c28c2f2..cd9c099 100644
> --- a/arch/sparc/include/asm/machines.h
> +++ b/arch/sparc/include/asm/machines.h
> @@ -15,7 +15,7 @@ struct Sun_Machine_Models {
> /* Current number of machines we know about that has an IDPROM
> * machtype entry including one entry for the 0x80 OBP machines.
> */
> -#define NUM_SUN_MACHINES 15
> +#define NUM_SUN_MACHINES 16
>
> /* The machine type in the idprom area looks like this:
> *
> @@ -30,6 +30,7 @@ #define NUM_SUN_MACHINES 15
>
> #define SM_ARCH_MASK 0xf0
> #define SM_SUN4 0x20
> +#define M_LEON 0x30
> #define SM_SUN4C 0x50
> #define SM_SUN4M 0x70
> #define SM_SUN4M_OBP 0x80
> @@ -41,6 +42,9 @@ #define SM_4_110 0x02 /* Sun 4/1
> #define SM_4_330 0x03 /* Sun 4/300 series */
> #define SM_4_470 0x04 /* Sun 4/400 series */
>
> +/* Leon machines */
> +#define M_LEON3_SOC 0x02 /* Leon3 SoC */
> +
> /* Sun4c machines Full Name - PROM NAME */
> #define SM_4C_SS1 0x01 /* Sun4c SparcStation 1 - Sun 4/60 */
> #define SM_4C_IPC 0x02 /* Sun4c SparcStation IPC - Sun 4/40 */
> diff --git a/arch/sparc/include/asm/system_32.h
> b/arch/sparc/include/asm/system_32.h
> index 751c8c1..890036b 100644
> --- a/arch/sparc/include/asm/system_32.h
> +++ b/arch/sparc/include/asm/system_32.h
> @@ -32,6 +32,7 @@ enum sparc_cpu {
> sun4u = 0x05, /* V8 ploos ploos */
> sun_unknown = 0x06,
> ap1000 = 0x07, /* almost a sun4m */
> + sparc_leon = 0x08, /* Leon SoC */
> };
>
> /* Really, userland should not be looking at any of this... */
> diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
> index 54742e5..b2da23f 100644
> --- a/arch/sparc/kernel/Makefile
> +++ b/arch/sparc/kernel/Makefile
> @@ -40,6 +40,8 @@ obj-y += prom_$(BITS).
> obj-y += of_device_$(BITS).o
> obj-$(CONFIG_SPARC64) += prom_irqtrans.o
>
> +obj-$(CONFIG_LEON) += leon.o
> +
> obj-$(CONFIG_SPARC64) += reboot.o
> obj-$(CONFIG_SPARC64) += sysfs.o
> obj-$(CONFIG_SPARC64) += iommu.o
> diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c
> index d85c3dc..07e9d71 100644
> --- a/arch/sparc/kernel/cpu.c
> +++ b/arch/sparc/kernel/cpu.c
> @@ -312,7 +312,12 @@ void __cpuinit cpu_probe(void)
>
> psr = get_psr();
> put_psr(psr | PSR_EF);
> +#ifdef CONFIG_LEON
> + fpu_vers = 7;
> +#else
> fpu_vers = ((get_fsr() >> 17) & 0x7);
> +#endif
> +
> put_psr(psr);
>
> set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
> diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
> index f0b4b51..84f8138 100644
> --- a/arch/sparc/kernel/head_32.S
> +++ b/arch/sparc/kernel/head_32.S
> @@ -814,6 +814,10 @@ got_prop:
>
> cmp %l1, ' '
> be 1f
> +#if defined(CONFIG_LEON)
> + cmp %l1, '2' ! leon2 or compatible
> + be 1f
> +#endif
> cmp %l1, 'c'
> be 1f
> cmp %l1, 'm'
> @@ -836,6 +840,10 @@ got_prop:
> be sun4m_init
> cmp %l1, 'd' ! Let us see how the beast
> will die
> be sun4d_init
> +#if defined(CONFIG_LEON)
> + cmp %l1, '2' ! leon2 or compatible
> + be sun4c_continue_boot
> +#endif
> nop
>
> /* Jump into mmu context zero. */
> diff --git a/arch/sparc/kernel/idprom.c b/arch/sparc/kernel/idprom.c
> index 57922f6..6dc677a 100644
> --- a/arch/sparc/kernel/idprom.c
> +++ b/arch/sparc/kernel/idprom.c
> @@ -31,6 +31,8 @@ static struct Sun_Machine_Models Sun_Mac
> { .name = "Sun 4/200 Series", .id_machtype = (SM_SUN4 | SM_4_260) },
> { .name = "Sun 4/300 Series", .id_machtype = (SM_SUN4 | SM_4_330) },
> { .name = "Sun 4/400 Series", .id_machtype = (SM_SUN4 | SM_4_470) },
> +/* Now Leon */
> +{ "Leon3 System-on-a-Chip", .id_machtype = (M_LEON | M_LEON3_SOC)
> },
> /* Now, Sun4c's */
> { .name = "Sun4c SparcStation 1", .id_machtype = (SM_SUN4C | SM_4C_SS1)
> },
> { .name = "Sun4c SparcStation IPC", .id_machtype = (SM_SUN4C | SM_4C_IPC)
> },
> diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
> index ad800b8..34d9cff 100644
> --- a/arch/sparc/kernel/irq_32.c
> +++ b/arch/sparc/kernel/irq_32.c
> @@ -639,6 +639,7 @@ void __init init_IRQ(void)
> extern void sun4c_init_IRQ( void );
> extern void sun4m_init_IRQ( void );
> extern void sun4d_init_IRQ( void );
> + extern void leon_init_IRQ(void);
>
> switch(sparc_cpu_model) {
> case sun4c:
> @@ -661,6 +662,10 @@ #endif
> sun4d_init_IRQ();
> break;
>
> + case sparc_leon:
> + leon_init_IRQ();
> + break;
> +
> default:
> prom_printf("Cannot initialize IRQs on this Sun machine...");
> break;
> diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
> index 998cadb..09c092d 100644
> --- a/arch/sparc/kernel/setup_32.c
> +++ b/arch/sparc/kernel/setup_32.c
> @@ -235,6 +235,8 @@ void __init setup_arch(char **cmdline_p)
> sparc_cpu_model = sun4e;
> if (!strcmp(&cputypval,"sun4u"))
> sparc_cpu_model = sun4u;
> + if (!strcmp(&cputypval, "leon2"))
> + sparc_cpu_model = sparc_leon;
>
> printk("ARCH: ");
> switch(sparc_cpu_model) {
> @@ -256,6 +258,9 @@ void __init setup_arch(char **cmdline_p)
> case sun4u:
> printk("SUN4U\n");
> break;
> + case sparc_leon:
> + printk("LEON\n");
> + break;
> default:
> printk("UNKNOWN!\n");
> break;
> diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
> index 681abe0..14fcefe 100644
> --- a/arch/sparc/mm/Makefile
> +++ b/arch/sparc/mm/Makefile
> @@ -11,6 +11,7 @@ obj-$(CONFIG_SPARC32) += loadmmu.o
> obj-y += generic_$(BITS).o
> obj-$(CONFIG_SPARC32) += extable.o btfixup.o srmmu.o iommu.o io-unit.o
> obj-$(CONFIG_SPARC32) += hypersparc.o viking.o tsunami.o swift.o
> +obj-$(CONFIG_LEON) += leon.o
We have two leon.c (+leon.o), this is confusing.
Consider a better naming scheme.
leon_mm.c, leon_kernel.c for example.
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