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https://github.com/AsahiLinux/u-boot
synced 2024-11-24 21:54:01 +00:00
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>
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parent
e1208c2fe5
commit
a166fbca20
11 changed files with 39 additions and 23 deletions
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@ -43,7 +43,7 @@ m8260_cpm_reset(void)
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} while ((immr->im_cpm.cp_cpcr & CPM_CR_FLG) && ++count < 1000000);
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#ifdef CONFIG_HARD_I2C
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*((unsigned short*)(&immr->im_dprambase[PROFF_I2C_BASE])) = 0;
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immr->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)] = 0;
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#endif
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}
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@ -106,7 +106,7 @@ int checkcpu (void)
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* in the mask.
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*/
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m = immr & (IMMR_PARTNUM_MSK | IMMR_MASKNUM_MSK);
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k = *((ushort *) & immap->im_dprambase[PROFF_REVNUM]);
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k = immap->im_dprambase16[PROFF_REVNUM / sizeof(u16)];
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switch (m) {
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case 0x0000:
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@ -221,14 +221,14 @@ void i2c_init(int speed, int slaveadd)
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i2c_init_board();
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#endif
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dpaddr = *((unsigned short *) (&immap->im_dprambase[PROFF_I2C_BASE]));
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dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
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if (dpaddr == 0) {
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/* need to allocate dual port ram */
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dpaddr = m8260_cpm_dpalloc(64 +
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(NUM_RX_BDS * sizeof(I2C_BD)) +
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(NUM_TX_BDS * sizeof(I2C_BD)) +
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MAX_TX_SPACE, 64);
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*((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE])) =
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immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)] =
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dpaddr;
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}
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@ -305,7 +305,7 @@ void i2c_newio(i2c_state_t *state)
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debug("[I2C] i2c_newio\n");
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dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
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dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
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iip = (iic_t *)&immap->im_dprambase[dpaddr];
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state->rx_idx = 0;
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state->tx_idx = 0;
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@ -480,7 +480,7 @@ int i2c_doio(i2c_state_t *state)
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return I2CERR_QUEUE_EMPTY;
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}
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dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
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dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
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iip = (iic_t *)&immap->im_dprambase[dpaddr];
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iip->iic_rbptr = iip->iic_rbase;
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iip->iic_tbptr = iip->iic_tbase;
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@ -105,7 +105,7 @@ static int mpc8260_smc_serial_init(void)
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/* initialize pointers to SMC */
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sp = (smc_t *) &(im->im_smc[SMC_INDEX]);
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*(ushort *)(&im->im_dprambase[PROFF_SMC_BASE]) = PROFF_SMC;
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im->im_dprambase16[PROFF_SMC_BASE / sizeof(u16)] = PROFF_SMC;
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up = (smc_uart_t *)&im->im_dprambase[PROFF_SMC];
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/* Disable transmitter/receiver. */
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@ -331,7 +331,7 @@ kgdb_serial_init (void)
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/* initialize pointers to SMC */
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sp = (smc_t *) &(im->im_smc[KGDB_SMC_INDEX]);
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*(ushort *)(&im->im_dprambase[KGDB_PROFF_SMC_BASE]) = KGDB_PROFF_SMC;
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im->im_dprambase16[KGDB_PROFF_SMC_BASE / sizeof(u16)] = KGDB_PROFF_SMC;
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up = (smc_uart_t *)&im->im_dprambase[KGDB_PROFF_SMC];
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/* Disable transmitter/receiver. */
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@ -146,7 +146,7 @@ void spi_init_f (void)
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immr = (immap_t *) CONFIG_SYS_IMMR;
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cp = (cpm8260_t *) &immr->im_cpm;
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*(ushort *)(&immr->im_dprambase[PROFF_SPI_BASE]) = PROFF_SPI;
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immr->im_dprambase16[PROFF_SPI_BASE / sizeof(u16)] = PROFF_SPI;
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spi = (spi_t *)&immr->im_dprambase[PROFF_SPI];
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/* 1 */
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@ -78,7 +78,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
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if ((pvr >> 16) != 0x0050)
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return -1;
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k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
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k = (immr << 16) |
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immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)];
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m = 0;
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suf = "";
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@ -194,7 +195,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
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if ((pvr >> 16) != 0x0050)
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return -1;
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k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
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k = (immr << 16) |
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immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)];
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m = 0;
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switch (k) {
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@ -253,7 +255,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
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if ((pvr >> 16) != 0x0050)
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return -1;
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k = (immr << 16) | in_be16((ushort *)&immap->im_cpm.cp_dparam[0xB0]);
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k = (immr << 16) |
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in_be16(&immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)]);
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m = 0;
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switch (k) {
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@ -312,7 +315,8 @@ static int check_CPU (long clock, uint pvr, uint immr)
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if ((pvr >> 16) != 0x0050)
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return -1;
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k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
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k = (immr << 16) |
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immap->im_cpm.cp_dparam16[PROFF_REVNUM / sizeof(u16)];
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m = 0;
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switch (k) {
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@ -485,7 +485,12 @@ typedef struct comm_proc {
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* Some processors don't have all of it populated.
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*/
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u_char cp_dpmem[0x1C00]; /* BD / Data / ucode */
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u_char cp_dparam[0x400]; /* Parameter RAM */
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/* Parameter RAM */
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union {
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u_char cp_dparam[0x400];
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u16 cp_dparam16[0x200];
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};
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} cpm8xx_t;
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/* Internal memory map.
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@ -526,13 +526,18 @@ typedef struct immap {
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/* Some references are into the unique and known dpram spaces,
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* others are from the generic base.
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*/
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#define im_dprambase im_dpram1
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u_char im_dpram1[16*1024];
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char res1[16*1024];
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u_char im_dpram2[4*1024];
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char res2[8*1024];
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u_char im_dpram3[4*1024];
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char res3[16*1024];
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union {
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struct {
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u_char im_dpram1[16 * 1024];
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char res1[16 * 1024];
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u_char im_dpram2[4 * 1024];
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char res2[8 * 1024];
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u_char im_dpram3[4 * 1024];
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char res3[16 * 1024];
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};
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u8 im_dprambase[64 * 1024];
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u16 im_dprambase16[32 * 1024];
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};
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sysconf8260_t im_siu_conf; /* SIU Configuration */
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memctl8260_t im_memctl; /* Memory Controller */
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@ -535,7 +535,7 @@ do_i2cinfo (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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volatile iic_t *iip;
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uint dpaddr;
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dpaddr = *((unsigned short *) (&immap->im_dprambase[PROFF_I2C_BASE]));
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dpaddr = immap->im_dprambase16[PROFF_I2C_BASE / sizeof(u16)];
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if (dpaddr == 0)
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iip = NULL;
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else
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@ -309,7 +309,8 @@ int idma_init (void)
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memaddr = dpalloc (sizeof (pram_idma_t), 64);
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*(volatile ushort *) &immap->im_dprambase[PROFF_IDMA2_BASE] = memaddr;
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*(volatile u16 *)&immap->im_dprambase16
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[PROFF_IDMA2_BASE / sizeof(u16)] = memaddr;
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piptr = (volatile pram_idma_t *) ((uint) (immap) + memaddr);
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piptr->pi_resv1 = 0; /* manual says: clear it */
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@ -127,6 +127,7 @@ typedef struct cpm_buf_desc {
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*/
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#define PROFF_SCC1 ((uint)0x0000)
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#define PROFF_IIC ((uint)0x0080)
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#define PROFF_REVNUM ((uint)0x00b0)
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#define PROFF_SCC2 ((uint)0x0100)
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#define PROFF_SPI ((uint)0x0180)
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#define PROFF_SCC3 ((uint)0x0200)
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