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authorScott Wood <scottwood@freescale.com>2013-05-17 20:01:54 -0500
committerWolfgang Denk <wd@denx.de>2013-06-11 22:01:45 +0200
commita166fbca20e40937bf37cc18c389f68e995c1821 (patch)
treeca90c9999014f7172aefabf257c9c0d2533aecf4 /arch/powerpc/cpu
parente1208c2fe5e07f9a248cfbf9bbb212aa34ad2806 (diff)
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powerpc: fix 8xx and 82xx type-punning warnings with GCC 4.7
C99's strict aliasing rules are insane to use in low-level code such as a bootloader, but as Wolfgang has rejected -fno-strict-aliasing in the past, add a union so that 16-bit accesses can be performed. Compile-tested only. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'arch/powerpc/cpu')
-rw-r--r--arch/powerpc/cpu/mpc8260/commproc.c2
-rw-r--r--arch/powerpc/cpu/mpc8260/cpu.c2
-rw-r--r--arch/powerpc/cpu/mpc8260/i2c.c8
-rw-r--r--arch/powerpc/cpu/mpc8260/serial_smc.c4
-rw-r--r--arch/powerpc/cpu/mpc8260/spi.c2
-rw-r--r--arch/powerpc/cpu/mpc8xx/cpu.c12
6 files changed, 17 insertions, 13 deletions
diff --git a/arch/powerpc/cpu/mpc8260/commproc.c b/arch/powerpc/cpu/mpc8260/commproc.c
index 22cef3e..484bd17 100644
--- a/arch/powerpc/cpu/mpc8260/commproc.c
+++ b/arch/powerpc/cpu/mpc8260/commproc.c
@@ -43,7 +43,7 @@ m8260_cpm_reset(void)
} while ((immr->im_cpm.cp_cpcr & CPM_CR_FLG) && ++count < 1000000);
#ifdef CONFIG_HARD_I2C
- *((unsigned short*)(&immr->im_dprambase[PROFF_I2C_BASE])) = 0;
+ immr->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)] = 0;
#endif
}
diff --git a/arch/powerpc/cpu/mpc8260/cpu.c b/arch/powerpc/cpu/mpc8260/cpu.c
index f8bc5a9..22e1a23 100644
--- a/arch/powerpc/cpu/mpc8260/cpu.c
+++ b/arch/powerpc/cpu/mpc8260/cpu.c
@@ -106,7 +106,7 @@ int checkcpu (void)
* in the mask.
*/
m = immr & (IMMR_PARTNUM_MSK | IMMR_MASKNUM_MSK);
- k = *((ushort *) & immap->im_dprambase[PROFF_REVNUM]);
+ k = immap->im_dprambase16[PROFF_REVNUM / sizeof(u16)];
switch (m) {
case 0x0000:
diff --git a/arch/powerpc/cpu/mpc8260/i2c.c b/arch/powerpc/cpu/mpc8260/i2c.c
index b720b1f..e2341e9 100644
--- a/arch/powerpc/cpu/mpc8260/i2c.c
+++ b/arch/powerpc/cpu/mpc8260/i2c.c
@@ -221,14 +221,14 @@ void i2c_init(int speed, int slaveadd)
i2c_init_board();
#endif
- dpaddr = *((unsigned short *) (&immap->im_dprambase[PROFF_I2C_BASE]));
+ dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
if (dpaddr == 0) {
/* need to allocate dual port ram */
dpaddr = m8260_cpm_dpalloc(64 +
(NUM_RX_BDS * sizeof(I2C_BD)) +
(NUM_TX_BDS * sizeof(I2C_BD)) +
MAX_TX_SPACE, 64);
- *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE])) =
+ immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)] =
dpaddr;
}
@@ -305,7 +305,7 @@ void i2c_newio(i2c_state_t *state)
debug("[I2C] i2c_newio\n");
- dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
+ dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
iip = (iic_t *)&immap->im_dprambase[dpaddr];
state->rx_idx = 0;
state->tx_idx = 0;
@@ -480,7 +480,7 @@ int i2c_doio(i2c_state_t *state)
return I2CERR_QUEUE_EMPTY;
}
- dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
+ dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
iip = (iic_t *)&immap->im_dprambase[dpaddr];
iip->iic_rbptr = iip->iic_rbase;
iip->iic_tbptr = iip->iic_tbase;
diff --git a/arch/powerpc/cpu/mpc8260/serial_smc.c b/arch/powerpc/cpu/mpc8260/serial_smc.c
index feba1f6..9410e4c 100644
--- a/arch/powerpc/cpu/mpc8260/serial_smc.c
+++ b/arch/powerpc/cpu/mpc8260/serial_smc.c
@@ -105,7 +105,7 @@ static int mpc8260_smc_serial_init(void)
/* initialize pointers to SMC */
sp = (smc_t *) &(im->im_smc[SMC_INDEX]);
- *(ushort *)(&im->im_dprambase[PROFF_SMC_BASE]) = PROFF_SMC;
+ im->im_dprambase16[PROFF_SMC_BASE / sizeof(u16)] = PROFF_SMC;
up = (smc_uart_t *)&im->im_dprambase[PROFF_SMC];
/* Disable transmitter/receiver. */
@@ -331,7 +331,7 @@ kgdb_serial_init (void)
/* initialize pointers to SMC */
sp = (smc_t *) &(im->im_smc[KGDB_SMC_INDEX]);
- *(ushort *)(&im->im_dprambase[KGDB_PROFF_SMC_BASE]) = KGDB_PROFF_SMC;
+ im->im_dprambase16[KGDB_PROFF_SMC_BASE / sizeof(u16)] = KGDB_PROFF_SMC;
up = (smc_uart_t *)&im->im_dprambase[KGDB_PROFF_SMC];
/* Disable transmitter/receiver. */
diff --git a/arch/powerpc/cpu/mpc8260/spi.c b/arch/powerpc/cpu/mpc8260/spi.c
index dc98ea7..01b492e 100644
--- a/arch/powerpc/cpu/mpc8260/spi.c
+++ b/arch/powerpc/cpu/mpc8260/spi.c
@@ -146,7 +146,7 @@ void spi_init_f (void)
immr = (immap_t *) CONFIG_SYS_IMMR;
cp = (cpm8260_t *) &immr->im_cpm;
- *(ushort *)(&immr->im_dprambase[PROFF_SPI_BASE]) = PROFF_SPI;
+ immr->im_dprambase16[PROFF_SPI_BASE / sizeof(u16)] = PROFF_SPI;
spi = (spi_t *)&immr->im_dprambase[PROFF_SPI];
/* 1 */
diff --git a/arch/powerpc/cpu/mpc8xx/cpu.c b/arch/powerpc/cpu/mpc8xx/cpu.c
index b6b733d..dc33eb3 100644
--- a/arch/powerpc/cpu/mpc8xx/cpu.c
+++ b/arch/powerpc/cpu/mpc8xx/cpu.c
@@ -78,7 +78,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
if ((pvr >> 16) != 0x0050)
return -1;
- k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
+ k = (immr << 16) |
+ immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)];
m = 0;
suf = "";
@@ -194,7 +195,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
if ((pvr >> 16) != 0x0050)
return -1;
- k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
+ k = (immr << 16) |
+ immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)];
m = 0;
switch (k) {
@@ -253,7 +255,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
if ((pvr >> 16) != 0x0050)
return -1;
- k = (immr << 16) | in_be16((ushort *)&immap->im_cpm.cp_dparam[0xB0]);
+ k = (immr << 16) |
+ in_be16(&immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)]);
m = 0;
switch (k) {
@@ -312,7 +315,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
if ((pvr >> 16) != 0x0050)
return -1;
- k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
+ k = (immr << 16) |
+ immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)];
m = 0;
switch (k) {