diff options
Diffstat (limited to 'src/northbridge/amd/lx')
| -rw-r--r-- | src/northbridge/amd/lx/northbridge.c | 36 | ||||
| -rw-r--r-- | src/northbridge/amd/lx/raminit.c | 5 |
2 files changed, 36 insertions, 5 deletions
diff --git a/src/northbridge/amd/lx/northbridge.c b/src/northbridge/amd/lx/northbridge.c index 2de9afc7b6..14617243dd 100644 --- a/src/northbridge/amd/lx/northbridge.c +++ b/src/northbridge/amd/lx/northbridge.c @@ -9,6 +9,7 @@ #include <bitops.h> #include "chip.h" #include "northbridge.h" +#include <cpu/cpu.h> #include <cpu/amd/lxdef.h> #include <cpu/x86/msr.h> #include <cpu/x86/cache.h> @@ -274,6 +275,38 @@ static void enable_shadow(device_t dev) } + +static void enable_L2_cache(void) { + msr_t msr; + + /* Instruction Memory Configuration register + * set EBE bit, required when L2 cache is enabled + */ + msr = rdmsr(CPU_IM_CONFIG); + msr.lo |= 0x400; + wrmsr(CPU_IM_CONFIG, msr); + + /* Data Memory Subsystem Configuration register + * set EVCTONRPL bit, required when L2 cache is enabled in victim mode + */ + msr = rdmsr(CPU_DM_CONFIG0); + msr.lo |= 0x4000; + wrmsr(CPU_DM_CONFIG0, msr); + + /* invalidate L2 cache */ + msr.hi = 0x00; + msr.lo = 0x10; + wrmsr(L2_CONFIG_MSR, msr); + + /* Enable L2 cache */ + msr.hi = 0x00; + msr.lo = 0x0f; + wrmsr(L2_CONFIG_MSR, msr); + + printk_debug("L2 cache enabled\n"); +} + + static void northbridge_init(device_t dev) { struct northbridge_amd_lx_config *nb = (struct northbridge_amd_lx_config *)dev->chip_info; @@ -456,8 +489,9 @@ static void enable_dev(struct device *dev) extern void cpubug(void); printk_debug("DEVICE_PATH_PCI_DOMAIN\n"); /* cpubug MUST be called before setup_lx(), so we force the issue here */ + enable_L2_cache(); northbridgeinit(); - cpubug(); + /* cpubug(); GX3*/ chipsetinit(nb); setup_lx(); /* do this here for now -- this chip really breaks our device model */ diff --git a/src/northbridge/amd/lx/raminit.c b/src/northbridge/amd/lx/raminit.c index 7fd39ae22e..d4a5d7b701 100644 --- a/src/northbridge/amd/lx/raminit.c +++ b/src/northbridge/amd/lx/raminit.c @@ -1,13 +1,10 @@ #include <cpu/amd/lxdef.h> -#if 0 + static void sdram_set_registers(const struct mem_controller *ctrl) { } -#endif - - /* Section 6.1.3, LX processor databooks, BIOS Initialization Sequence * Section 4.1.4, GX/CS5535 GeodeROM Porting guide */ static void sdram_enable(int controllers, const struct mem_controller *ctrl) |