u-boot/arch/powerpc/cpu/mpc8xxx/law.c
Ying Zhang 0151d99d74 powerpc: deleted unused symbol CONFIG_SPL_NAND_MINIMAL and enabled some functionality for common SPL
1. The symbol CONFIG_SPL_NAND_MINIMAL is unused, so deleted it.
2. Some functions were unused in the minimal SPL, but it is useful
in the common SPL. So, enabled some functionality for common SPL.

Signed-off-by: Ying Zhang <b40530@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
2013-08-20 09:47:15 -07:00

320 lines
7.2 KiB
C

/*
* Copyright 2008-2011 Freescale Semiconductor, Inc.
*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/compiler.h>
#include <asm/fsl_law.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
#define FSL_HW_NUM_LAWS CONFIG_SYS_FSL_NUM_LAWS
#ifdef CONFIG_FSL_CORENET
#define LAW_BASE (CONFIG_SYS_FSL_CORENET_CCM_ADDR)
#define LAWAR_ADDR(x) (&((ccsr_local_t *)LAW_BASE)->law[x].lawar)
#define LAWBARH_ADDR(x) (&((ccsr_local_t *)LAW_BASE)->law[x].lawbarh)
#define LAWBARL_ADDR(x) (&((ccsr_local_t *)LAW_BASE)->law[x].lawbarl)
#define LAWBAR_SHIFT 0
#else
#define LAW_BASE (CONFIG_SYS_IMMR + 0xc08)
#define LAWAR_ADDR(x) ((u32 *)LAW_BASE + 8 * x + 2)
#define LAWBAR_ADDR(x) ((u32 *)LAW_BASE + 8 * x)
#define LAWBAR_SHIFT 12
#endif
static inline phys_addr_t get_law_base_addr(int idx)
{
#ifdef CONFIG_FSL_CORENET
return (phys_addr_t)
((u64)in_be32(LAWBARH_ADDR(idx)) << 32) |
in_be32(LAWBARL_ADDR(idx));
#else
return (phys_addr_t)in_be32(LAWBAR_ADDR(idx)) << LAWBAR_SHIFT;
#endif
}
static inline void set_law_base_addr(int idx, phys_addr_t addr)
{
#ifdef CONFIG_FSL_CORENET
out_be32(LAWBARL_ADDR(idx), addr & 0xffffffff);
out_be32(LAWBARH_ADDR(idx), (u64)addr >> 32);
#else
out_be32(LAWBAR_ADDR(idx), addr >> LAWBAR_SHIFT);
#endif
}
void set_law(u8 idx, phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
{
gd->arch.used_laws |= (1 << idx);
out_be32(LAWAR_ADDR(idx), 0);
set_law_base_addr(idx, addr);
out_be32(LAWAR_ADDR(idx), LAW_EN | ((u32)id << 20) | (u32)sz);
/* Read back so that we sync the writes */
in_be32(LAWAR_ADDR(idx));
}
void disable_law(u8 idx)
{
gd->arch.used_laws &= ~(1 << idx);
out_be32(LAWAR_ADDR(idx), 0);
set_law_base_addr(idx, 0);
/* Read back so that we sync the writes */
in_be32(LAWAR_ADDR(idx));
return;
}
#if !defined(CONFIG_NAND_SPL) && \
(!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL_INIT_MINIMAL))
static int get_law_entry(u8 i, struct law_entry *e)
{
u32 lawar;
lawar = in_be32(LAWAR_ADDR(i));
if (!(lawar & LAW_EN))
return 0;
e->addr = get_law_base_addr(i);
e->size = lawar & 0x3f;
e->trgt_id = (lawar >> 20) & 0xff;
return 1;
}
#endif
int set_next_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
{
u32 idx = ffz(gd->arch.used_laws);
if (idx >= FSL_HW_NUM_LAWS)
return -1;
set_law(idx, addr, sz, id);
return idx;
}
#if !defined(CONFIG_NAND_SPL) && \
(!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL_INIT_MINIMAL))
int set_last_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
{
u32 idx;
/* we have no LAWs free */
if (gd->arch.used_laws == -1)
return -1;
/* grab the last free law */
idx = __ilog2(~(gd->arch.used_laws));
if (idx >= FSL_HW_NUM_LAWS)
return -1;
set_law(idx, addr, sz, id);
return idx;
}
struct law_entry find_law(phys_addr_t addr)
{
struct law_entry entry;
int i;
entry.index = -1;
entry.addr = 0;
entry.size = 0;
entry.trgt_id = 0;
for (i = 0; i < FSL_HW_NUM_LAWS; i++) {
u64 upper;
if (!get_law_entry(i, &entry))
continue;
upper = entry.addr + (2ull << entry.size);
if ((addr >= entry.addr) && (addr < upper)) {
entry.index = i;
break;
}
}
return entry;
}
void print_laws(void)
{
int i;
u32 lawar;
printf("\nLocal Access Window Configuration\n");
for (i = 0; i < FSL_HW_NUM_LAWS; i++) {
lawar = in_be32(LAWAR_ADDR(i));
#ifdef CONFIG_FSL_CORENET
printf("LAWBARH%02d: 0x%08x LAWBARL%02d: 0x%08x",
i, in_be32(LAWBARH_ADDR(i)),
i, in_be32(LAWBARL_ADDR(i)));
#else
printf("LAWBAR%02d: 0x%08x", i, in_be32(LAWBAR_ADDR(i)));
#endif
printf(" LAWAR%02d: 0x%08x\n", i, lawar);
printf("\t(EN: %d TGT: 0x%02x SIZE: ",
(lawar & LAW_EN) ? 1 : 0, (lawar >> 20) & 0xff);
print_size(lawar_size(lawar), ")\n");
}
return;
}
/* use up to 2 LAWs for DDR, used the last available LAWs */
int set_ddr_laws(u64 start, u64 sz, enum law_trgt_if id)
{
u64 start_align, law_sz;
int law_sz_enc;
if (start == 0)
start_align = 1ull << (LAW_SIZE_32G + 1);
else
start_align = 1ull << (ffs64(start) - 1);
law_sz = min(start_align, sz);
law_sz_enc = __ilog2_u64(law_sz) - 1;
if (set_last_law(start, law_sz_enc, id) < 0)
return -1;
/* recalculate size based on what was actually covered by the law */
law_sz = 1ull << __ilog2_u64(law_sz);
/* do we still have anything to map */
sz = sz - law_sz;
if (sz) {
start += law_sz;
start_align = 1ull << (ffs64(start) - 1);
law_sz = min(start_align, sz);
law_sz_enc = __ilog2_u64(law_sz) - 1;
if (set_last_law(start, law_sz_enc, id) < 0)
return -1;
} else {
return 0;
}
/* do we still have anything to map */
sz = sz - law_sz;
if (sz)
return 1;
return 0;
}
#endif /* not SPL */
void init_laws(void)
{
int i;
#if FSL_HW_NUM_LAWS < 32
gd->arch.used_laws = ~((1 << FSL_HW_NUM_LAWS) - 1);
#elif FSL_HW_NUM_LAWS == 32
gd->arch.used_laws = 0;
#else
#error FSL_HW_NUM_LAWS can not be greater than 32 w/o code changes
#endif
/*
* Any LAWs that were set up before we booted assume they are meant to
* be around and mark them used.
*/
for (i = 0; i < FSL_HW_NUM_LAWS; i++) {
u32 lawar = in_be32(LAWAR_ADDR(i));
if (lawar & LAW_EN)
gd->arch.used_laws |= (1 << i);
}
#if (defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)) || \
(defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD))
/*
* in SPL boot we've already parsed the law_table and setup those LAWs
* so don't do it again.
*/
return;
#endif
for (i = 0; i < num_law_entries; i++) {
if (law_table[i].index == -1)
set_next_law(law_table[i].addr, law_table[i].size,
law_table[i].trgt_id);
else
set_law(law_table[i].index, law_table[i].addr,
law_table[i].size, law_table[i].trgt_id);
}
#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
/* check RCW to get which port is used for boot */
ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
u32 bootloc = in_be32(&gur->rcwsr[6]);
/*
* in SRIO or PCIE boot we need to set specail LAWs for
* SRIO or PCIE interfaces.
*/
switch ((bootloc & FSL_CORENET_RCWSR6_BOOT_LOC) >> 23) {
case 0x0: /* boot from PCIE1 */
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_PCIE_1);
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_PCIE_1);
break;
case 0x1: /* boot from PCIE2 */
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_PCIE_2);
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_PCIE_2);
break;
case 0x2: /* boot from PCIE3 */
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_PCIE_3);
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_PCIE_3);
break;
case 0x8: /* boot from SRIO1 */
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_RIO_1);
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_RIO_1);
break;
case 0x9: /* boot from SRIO2 */
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_RIO_2);
set_next_law(CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR_PHYS,
LAW_SIZE_1M,
LAW_TRGT_IF_RIO_2);
break;
default:
break;
}
#endif
return ;
}