diff options
Diffstat (limited to 'arch/mips/cavium-octeon/setup.c')
| -rw-r--r-- | arch/mips/cavium-octeon/setup.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index 00bf269763cf..cbd83205518d 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -284,6 +284,11 @@ void octeon_crash_smp_send_stop(void) #endif /* CONFIG_KEXEC */ +#ifdef CONFIG_CAVIUM_RESERVE32 +uint64_t octeon_reserve32_memory; +EXPORT_SYMBOL(octeon_reserve32_memory); +#endif + #ifdef CONFIG_KEXEC /* crashkernel cmdline parameter is parsed _after_ memory setup * we also parse it here (workaround for EHB5200) */ @@ -661,7 +666,9 @@ void __init prom_init(void) int i; u64 t; int argc; - +#ifdef CONFIG_CAVIUM_RESERVE32 + int64_t addr = -1; +#endif /* * The bootloader passes a pointer to the boot descriptor in * $a3, this is available as fw_arg3. @@ -776,6 +783,25 @@ void __init prom_init(void) cvmx_write_csr(CVMX_LED_UDD_DATX(1), 0); cvmx_write_csr(CVMX_LED_EN, 1); } +#ifdef CONFIG_CAVIUM_RESERVE32 + /* + * We need to temporarily allocate all memory in the reserve32 + * region. This makes sure the kernel doesn't allocate this + * memory when it is getting memory from the + * bootloader. Later, after the memory allocations are + * complete, the reserve32 will be freed. + * + * Allocate memory for RESERVED32 aligned on 2MB boundary. This + * is in case we later use hugetlb entries with it. + */ + addr = cvmx_bootmem_phy_named_block_alloc(CONFIG_CAVIUM_RESERVE32 << 20, + 0, 0, 2 << 20, + "CAVIUM_RESERVE32", 0); + if (addr < 0) + pr_err("Failed to allocate CAVIUM_RESERVE32 memory area\n"); + else + octeon_reserve32_memory = addr; +#endif #ifdef CONFIG_CAVIUM_OCTEON_LOCK_L2 if (cvmx_read_csr(CVMX_L2D_FUS3) & (3ull << 34)) { @@ -1053,6 +1079,16 @@ void __init plat_mem_setup(void) cvmx_bootmem_unlock(); #endif /* CONFIG_CRASH_DUMP */ +#ifdef CONFIG_CAVIUM_RESERVE32 + /* + * Now that we've allocated the kernel memory it is safe to + * free the reserved region. We free it here so that builtin + * drivers can use the memory. + */ + if (octeon_reserve32_memory) + cvmx_bootmem_free_named("CAVIUM_RESERVE32"); +#endif /* CONFIG_CAVIUM_RESERVE32 */ + if (total == 0) panic("Unable to allocate memory from " "cvmx_bootmem_phy_alloc"); |