diff options
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/cache-l2x0.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index 69a18316b23..b4d373ab1a5 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -30,6 +30,7 @@ struct l2c_init_data { const char *type; + unsigned way_size_0; unsigned num_lock; void (*of_parse)(const struct device_node *, u32 *, u32 *); void (*enable)(void __iomem *, u32, unsigned); @@ -276,6 +277,7 @@ static void l2c210_resume(void) static const struct l2c_init_data l2c210_data __initconst = { .type = "L2C-210", + .way_size_0 = SZ_8K, .num_lock = 1, .enable = l2c_enable, .outer_cache = { @@ -419,6 +421,7 @@ static void l2c220_sync(void) static const struct l2c_init_data l2c220_data = { .type = "L2C-220", + .way_size_0 = SZ_8K, .num_lock = 1, .enable = l2c_enable, .outer_cache = { @@ -654,6 +657,7 @@ static void __init l2c310_fixup(void __iomem *base, u32 cache_id, static const struct l2c_init_data l2c310_init_fns __initconst = { .type = "L2C-310", + .way_size_0 = SZ_8K, .num_lock = 8, .enable = l2c_enable, .fixup = l2c310_fixup, @@ -674,10 +678,8 @@ static void __init __l2c_init(const struct l2c_init_data *data, u32 aux_val, u32 aux_mask, u32 cache_id) { struct outer_cache_fns fns; + unsigned way_size_bits, ways; u32 aux; - u32 way_size = 0; - int ways; - int way_size_shift = L2X0_WAY_SIZE_SHIFT; /* * It is strange to save the register state before initialisation, @@ -708,7 +710,6 @@ static void __init __l2c_init(const struct l2c_init_data *data, case AURORA_CACHE_ID: ways = (aux >> 13) & 0xf; ways = 2 << ((ways + 1) >> 2); - way_size_shift = AURORA_WAY_SIZE_SHIFT; break; default: @@ -720,12 +721,15 @@ static void __init __l2c_init(const struct l2c_init_data *data, l2x0_way_mask = (1 << ways) - 1; /* - * L2 cache Size = Way size * Number of ways + * way_size_0 is the size that a way_size value of zero would be + * given the calculation: way_size = way_size_0 << way_size_bits. + * So, if way_size_bits=0 is reserved, but way_size_bits=1 is 16k, + * then way_size_0 would be 8k. + * + * L2 cache size = number of ways * way size. */ - way_size = (aux & L2X0_AUX_CTRL_WAY_SIZE_MASK) >> 17; - way_size = 1 << (way_size + way_size_shift); - - l2x0_size = ways * way_size * SZ_1K; + way_size_bits = (aux & L2X0_AUX_CTRL_WAY_SIZE_MASK) >> 17; + l2x0_size = ways * (data->way_size_0 << way_size_bits); fns = data->outer_cache; if (data->fixup) @@ -822,6 +826,7 @@ static void __init l2x0_of_parse(const struct device_node *np, static const struct l2c_init_data of_l2c210_data __initconst = { .type = "L2C-210", + .way_size_0 = SZ_8K, .num_lock = 1, .of_parse = l2x0_of_parse, .enable = l2c_enable, @@ -838,6 +843,7 @@ static const struct l2c_init_data of_l2c210_data __initconst = { static const struct l2c_init_data of_l2c220_data __initconst = { .type = "L2C-220", + .way_size_0 = SZ_8K, .num_lock = 1, .of_parse = l2x0_of_parse, .enable = l2c_enable, @@ -888,6 +894,7 @@ static void __init l2c310_of_parse(const struct device_node *np, static const struct l2c_init_data of_l2c310_data __initconst = { .type = "L2C-310", + .way_size_0 = SZ_8K, .num_lock = 8, .of_parse = l2c310_of_parse, .enable = l2c_enable, @@ -1067,6 +1074,7 @@ static void __init aurora_of_parse(const struct device_node *np, static const struct l2c_init_data of_aurora_with_outer_data __initconst = { .type = "Aurora", + .way_size_0 = SZ_4K, .num_lock = 4, .of_parse = aurora_of_parse, .enable = l2c_enable, @@ -1085,6 +1093,7 @@ static const struct l2c_init_data of_aurora_with_outer_data __initconst = { static const struct l2c_init_data of_aurora_no_outer_data __initconst = { .type = "Aurora", + .way_size_0 = SZ_4K, .num_lock = 4, .of_parse = aurora_of_parse, .enable = aurora_enable_no_outer, @@ -1234,6 +1243,7 @@ static void bcm_flush_range(unsigned long start, unsigned long end) /* Broadcom L2C-310 start from ARMs R3P2 or later, and require no fixups */ static const struct l2c_init_data of_bcm_l2x0_data __initconst = { .type = "BCM-L2C-310", + .way_size_0 = SZ_8K, .num_lock = 8, .of_parse = l2c310_of_parse, .enable = l2c_enable, @@ -1273,6 +1283,7 @@ static void tauros3_resume(void) static const struct l2c_init_data of_tauros3_data __initconst = { .type = "Tauros3", + .way_size_0 = SZ_8K, .num_lock = 8, .enable = l2c_enable, .save = tauros3_save, |